Archive for the ‘ CCTV Articles’ Category

Streaming Audio From A Mini Economy Series DVR To TechProSS App!

Written By:
Tuesday, November 25th, 2014


As some of you may know already we offer many different series of DVRs such as the Elite Series, Ultimate Series, etc. The specific unit I will be talking about is our 16 Channel DVR, the DVR-EL16480ME. This DVR is part of the Elite Mini Economy Series. Now, for whom streaming audio is important, there is one minor setback to this particular unit as it can only record one channel of audio. You can only enable audio on Channel 1 and no other channel. Even if you disable audio on channel 1 you cannot enable it on say Channel 2 or 3, ONLY Channel 1. If that does not deter you from this unit, there is a feature that, in my opinion, is pretty neat. You can stream audio from the unit to the TechProSS app on your phone. This way, when you want to log into your DVR from your phone, you can hear the live audio streaming to your device. If you really think about it, this set up will work on most of our DVRs. However I had a customer refer to this unit, so I will use it in my demonstration. Also, other units will be able to record/enable audio on more than one channel, depending on the DVR.

The setup I will use to demonstrate this requires a few things:

  1. DVR-EL16480ME
  2. Analog Camera
  3. BNC Video cable or a Plug and play cable with Audio
  4. 2x RCA-M-BNC-F
  5. 12V2A Power Supply
  6. Microphone
  7. Smart Phone w/ TechProSS App

Given that you have all the necessary equipment, you are ready to set it up and enjoy. The DVR will come with its own power supply in the box, so go ahead and get the unit booted up so you can see the display on your monitor. Next step is to plug your camera in and make sure all is operating smoothly. Remember, the camera you would like to hear the audio on needs to be on Channel 1 with this unit. I will express this again, there is no way to hear audio on any other channel than Channel 1. Once these steps are complete you are ready to hook up the cable for audio.

Let me take a second to explain that the way I am doing this is for testing purposes only. I am using about a 6 foot piece of BNC cable with two RCA-M-BNC-F connectors connected on opposite ends, converting this BNC video cable to an audio cable with RCA adapters on both ends. The ideal way I would do this is to buy the BNC plug and play cables we offer with audio wired in. You will still plug everything in the same place, just the BNC plug and play is more ideal for running cable 100’ or more. This way you don’t need to run a separate cable, it will all be wrapped into one.

Now, your microphone will have two connections on it. There is one female RCA plug and one male 12vDC plug. This is where the 12V2A power supply will come in handy in my situation. In your situation, or any situation where the plug and play is used, you will need a Y-splitter to split the power coming from the 12V power supply, one to the camera and one to the mic. For testing, I will use a separate 12V2A power supply to power the microphone.

In addition, the two RCA-M-BNC-F connectors will turn the BNC video cable into an audio cable. One end plugs into the mic and the other end to the audio input of the DVR. As you see below, this is what the connection should look like with the cable going to the mic and to the audio input on the DVR. You can also see where you connect the 12V to the red connection of the mic.

Audio Art. 2

Now that all your connections are made, you are ready to set it up at the DVR itself. I will walk you through the steps to configure audio on Channel 1 first, then we will get to the app. Right-click>Main Menu>log in>Go to settings>Encode and make sure Channel 1 is selected. Then make sure that “Audio/Video” is highlighted. This is what enables the audio on Channel 1 and allows the DVR to record it. See picture below. Now that you have that selected, click “Ok” and go to the main screen where you see all 16 channels. Here at this screen you will not hear any audio, that is so you won’t be bothered by the audio all the time while you are viewing multiple cameras. Now, double-click on your Camera 1, you should hear the live audio now. There is another way, if you want to watch all 16 cameras and still hear Channel 1’s audio. Click one time on Channel 1 to select it and you should hear the audio. Thats all she wrote, it was that easy, but now lets get into the app.

FullSizeRender (3)

First thing is first, you must download the app. I will be using the free version TechproSS Lite, although you may use either version you prefer. The difference between the two is, the free version you can not view recorded footage and you cannot set push notifications to alert your phone, whereas the version you must pay for can do these things. So once you have downloaded the app, go ahead and open it up. I am using an iPhone 5s, but it is the same for android.


When you open the app you should see the screen above. To start, we need to add the DVR to your app. At the top left of the screen, click on the four white windows to the left of “Live Preview”. The next screen will be as shown below. Now, click “Device Manager” and that is where the list of your DVRs would be if you had any. Click Add and then Manually Add, unless you are using DDNS. This brings you to the screen where you will add the DVR/NVR. From here, name the DVR, type the IP address of the DVR, leave “Port” at 37777, “Username” admin, “Password” admin (all lower case), and very important make sure the channel amount is accurate or it will not log into your DVR. Once all the correct information is added, you may click save. Now, you will see your DVR named the way you chose under Device Manager.


Now that you have your DVR added properly you may click back to the menu above. This time you will click on Live Preview and you will see the very first screenshot I showed you of the app above. Go ahead and click the plus sign in Channel 1’s window. It will ask you to select a device, choose your DVR and then choose Channel 1. Given everything is set up properly you should see your camera in the first window. Double click on your live camera and look for the icon that looks like this (below Left). Once you have found it, click on it, it should now look like this. (Below Right).

Audio Art.1

That is all, you should now be able to hear live audio streaming to your device. You will be able to hear this audio either on the WiFi or externally. To allow this to work externally, a few things need to be done first. I will be brief on this. First, you must port forward your TCP port within your router (Port: 37777). Once that is done properly (call our tech support line 866.573.8878 they will do this for you if need be), you need to add another device under device manager in the app for the same DVR. Only thing that changes is that you must use your external IP address. Hope this article has been informative, for more help with port forwarding download our free article, “Port Forwarding 101″.


Basics of the Colorado Marijuana Law about Video Recording for Retailers and Growers

Written By:
Monday, November 24th, 2014

Colorado was the first state to officially make the retail sale of Marijuana legal for recreational use, possession and retail sale. This was made possible due to Colorado Marijuana Law Amendment 64. Other states and U.S. territories such as Oregon, Washington state, Washington D.C., Alaska, and Guam have recently followed suit, all with varying laws and statutes in place (some like Washington have made possession of the substance legal but not yet the retail sale). 23 other states have legalized marijuana for strictly medical uses, and that number seems to be growing slowly, yet steadily every year.


The times are indeed changing, but with legalization comes inevitable regulation. To ensure that all growers, distributors, and retailers are operating within the boundaries of the new laws this article is a simplified overview of Video Recording and Storage Requirements. For the full list of laws and regulations, please consult the website.

The Colorado Amendment 64 law now requires that any retail establishment involved in retail Marijuana sale has to have 24 hour digital format video recording on the premises, and the footage recorded must be located in a secure location (under lock and key) that can only be accessed by management of the establishment. The typical method for physically securing video recorders are DVR Lock boxes. Lock boxes are tamper proof steel housings that enclose your DVRs and NVRs, and come equipped with a fan to keep the recording devices cool.

All footage recorded on DVRs or NVRs must be stored for a minimum of 40 days According to Colorado Amendment 64, and the video captured by the proprietor’s cameras and Digital Video Recorders / Network Video Recorders must be sufficiently high enough resolution to be able to accurately identify any entering or exiting the premises. While the Colorado law doesn’t specifically state a minimum required resolution for identification purposes, we recommend at least a 720p HD resolution to ensure that you’re capturing enough detail to be able to make accurate identification and detail enhancement possible if necessary. Keep in mind, depending on how close the camera is to the area being filmed, lower resolution cameras may work just as well as high definition camera. But, for a camera that’s farther away, a higher resolution gives you the ability to zoom in on the smallest objects yet still be able to resolve detail.

To give you a general idea of the different levels of detail you can see with different resolution security cameras, compare this analog 700TVL (T.V. Line) pan tilt zoom camera footage:

to a similar camera with a 2 megapixel (or 1080p HD) resolution.

Additionally, higher resolution cameras have an added benefit for growers, because they offer not only the ability to prevent possible theft of their plants, but also allows use those extra pixels for constant monitoring of growth rates, pests, growth abnormalities, providing instant visual assessment, as well as a time lapse view of the health of the crop that can increase overall yields.

Growers can use security cameras to monitor their crops

Figuring out how much hard drive space you need is easy. As an example, if you’re recording footage from one security camera at a resolution of 2 Megapixel (1080p High Resolution) with a frame rate of 30fps, and you’re recording video 24 hours a day for 40 days, you’ll need at least 2.44 terabytes of hard drive space to meet that demand. At 720p (or 1 megapixel) camera filming for the same amount of time will require at least 1.67 TB. To calculate exactly how much disk space you’ll need for any given number of cameras or resolution we have created an Online CCTV Hard Drive Calculator.

As for camera placement, security cameras must be placed showing twenty feet of all entry and exit points (on both sides of those doors). Camera coverage is also required for cash registers (point of sale areas) with enough resolution to make out facial features, as well as any areas where retail cannabis product is on display. Or, in the case of growers, complete video coverage of (including entry / exits) any areas where the plants are growing, being tested, cured, or being stored.

Any installed cameras must be able to film in any lighting conditions, so cameras with infrared (IR) are highly recommended. Cameras with built-in IR capability are able to film with sufficient clarity in total darkness by shining an invisible infrared which allows the camera to “see” in complete darkness. The higher the IR rating, the further they can see into the darkness. For example, in this video, you’ll see a pan tilt-zoom camera equipped with a 250 foot IR distance, first in a fully lit room, and then in complete darkness. You’ll notice that even in a complete absence of light, you’ll still get miniscule details when you’re zoomed in 20 or 30 times.

These recordings must include an on-screen, accurate representation of the date and time embedded in the footage, but not in such a way as to significantly obscure the footage. All surveillance footage must be made readily available to any state or local law enforcement agency that requests it. This must also be in a format that not only be easily accessed for viewing, but also in an encoded format that ensures no tampering or alteration has taken place. The footage can be erased after that time period, and must be if the facility / hardware is to be sold, but cannot be erased if the licensee is facing any criminal or civil investigation.

Additionally, a color photograph must be extractable from any of the footage at any time, so there must be a color printer on the premises, and the security network must be be equipped with a failure notification system that provides the owner advanced notification of any impending network or individual hardware failure or prolonged surveillance interruption.

This is by no means a complete list of the applicable laws regarding video surveillance, but at least this should provide you with a beginner’s guide to what you’ll need as a retailer or grower. If you have any specific questions that aren’t answered by this article or by the the official rules and regulations guide located at, you can speak to someone with full knowledge of the requirements, you can call at 866-573-8878. Were open from 9am to 6pm EST.


The not so far future of CCTV including UAVs and MAVs

Written By:
Friday, November 21st, 2014

Today, there is no doubt that technology affects everyone in different ways. Improvements in technology within the past few decades have changed the world in ways that one couldn’t have imagined before. From the times of the early arrow in 500 BC to using microwaves for repelling enemies, military uses of technology have influenced, and continue to influence technology today. UAVs (Unmanned aerial vehicle) and MAVs (micro air vehicle) are some of the new and developing technological appliances that are being developed to further improve the quality and efficiency of CCTV systems. We are all familiar with inventions like Internet, GPS systems, computer, microwave and much more that were developed by military and found their way in everyday usage of our lives. The CCTV technology is no different, and the military continues the development of those systems, especially in the field of surveillance. Rather than stationary CCTV systems that require numerous stations and setups, the new, improving technologies prove that the same, if not better quality surveillance can be obtained from smaller, mobile, and more efficient systems such as MAVs which I will explain further.


There are tons of apparatuses that are already in use today by the military, but are being developed to hopefully be used by the general population in the near future. One popular example that one may think of instantly is the drone. Drones, or UAV’s, are used in the United States military in an integration system by military planners to designate various individual aircraft elements in an overall usage plan for integrated operations. However, today, it is said that UAV’s may possibly make an appearance on the streets of Britain in the back of taxis. With powerful zoom, 360 degree vision, and facial recognition, up and coming UAV’s are “coming closer to being an established part of the CCTV landscape,” as said by the Telegraph. As they get cheaper, smaller, and more efficient, these small devices are being increasingly studied for numerous uses by groups of civilians.


A growing technology that is already seen as the “flying car” or “time travel” of the future is being improved, and it is surreal. The BugBot, a nano-drone technology, is being developed by the federal government in the Air Force Research Laboratory, and is the most advanced CCTV system ever seen. These miniscule bugs will be used by the Air Force, and will either be hand thrown or air dropped depending on the mission. These MAVs (Micro Air Vehicles) will be easily hidden and will go into a low powered, extended surveillance mode. The BugBot will need to harvest energy from environmental sources, such as solar power and wind power. This ties in not only future technology of CCTV, but environmentally-friendly practices that are encouraged all over the world by activists. Micro-sensor and micro-processor technology will be used to navigate and detect targets of different operations. The incredible developments in this tiny CCTV system allow BugBot to operate flawlessly, even with sensors that detect wind patterns, allowing it to fly through rough terrains. Aerial view is accessible even when GPS tracking is not by the BugBot’s Optic Flow technology, which allows for a vision based approach rather than sensors. Numerous MAVs can be used together, and their data collected, to obtain a big picture of the operation. While MAVs are being used by the Air Force today, one can imagine the future of BugBot. Imagine sitting in traffic on a busy highway. Wouldn’t it be convenient to release BugBot from your window and get a view of traffic in seconds? Everyday uses will soon blossom from military technology, just as it has been doing in the past decades.


Not only is the future of CCTV becoming more mobile in UAV’s, but is also starting to become prevalent in modern vehicles. The development of rear-view backup cameras is already saving lives, day by day. According to AAA, one quarter of vehicular crashes are a result of backing collisions. At first, mirrors were added to vehicles for a better view of the car’s surroundings, but improvements in technology call for cameras attached to the back of the car that allow the driver’s visibility to be improved by up to 75%. The first 10 feet of space behind a vehicle are most dangerous, and with at least 50 children involved in back-over accidents each week, it is obvious that the progress of improvements within this field of surveillance is one of the more important. Although rear view cameras were a luxury a few years ago when they were first developed, they can now be found in almost every new car. Rear view surveillance is the ultimate example of a more mobile, efficient use of CCTV.

2013 Honda Civic EX-L Coupesubaru-brz-sti-concept-camera-wing-mirrors

One disadvantage of growing CCTV technology such as drones is the controversy behind them. Government regulation, safety concerns, and even pilots who feel that they may lose their job, are advocating against the use of mobile technologies. Over the past few years, incidents involving the collision of civilian drones and commercial aircrafts have caused concern for safety, along with the pure observation of how easily UAV’s and other flying mobile objects can get stuck in trees, telephone wires, and other obstacles. What these pessimists don’t realize is that the usefulness of mobile CCTV systems is improving and is more technologically advanced, to the point where safety concerns and government speculation are petty matters, as compared to the uses of these systems. A search and rescue operation, for example, would prove UAV’s to be immensely useful in the criminology sector. Missing persons can be found easily with an aerial view of a flying aircraft rather than the countless, tiring, ineffective hours spent by authorities that could be using their time to take care of other matters. This is only one case in which the advantages of improving CCTV technology overpower the disadvantages.


It is easy to see that although many surveillance technologies are used in the military by highly trained professionals, the future holds many CCTV improvements for civilian, everyday uses. With studies and research from laboratories and developmental groups around the world, advancements in apparatuses that are already thought of as complex will come without a doubt. There is definitely a bright, positive future for technology of CCTV.


Advantages to Modeling Your Colorado Amendment 64 and I-502 Layout

Written By:
Thursday, November 20th, 2014

Amendment 64 Layout

Modeling Advantages for Washington Initiative 502 and Colorado Amendment 64: Introduction

So you’ve created the layout for your facility in order to submit it to the state, but now you are running into the questions like “How many cameras do I need?” or “Where and how do I position my cameras?”  Your first consideration should always be the governing authority’s prerequisites, and you’ll find few who are as informed as we here at Security Camera King. We have specialists in both the Washington Initiative 502 and Colorado Amendment 64’s rules and regulations. One of the reasons our customers are so successful at passing the boards and becoming licensed is precise layouts and camera placement.  One advantage we offer our Amendment 64 and I-502 customers is a 3D model of your facility.  This model can offer you several advantages that you would not otherwise have.  First, modeling your layout will give you an edge with the Washington Liquor Control Board or Colorado Department of Revenue by providing them with a precise example of where and how you are establishing camera coverage and security measures.  Second, designing this model can provide investors, contractors, employees, and coworkers with a professional rendering or rendition of the vision you have for your business.   And finally, modeling will help you with spatial planning by offering you a visual representation of how your grow area will look, work and function including how your surveillance and security systems will fit in.  This gives our customers a definite advantage over their competition!


Modeling Advantages for Initiative 502 and Amendment 64: Application

Modeling your I-502 or Amendment 64 layout allows you to have advantages normal applicants wont have! What do I mean? Let me be more specific. You can outline camera locations to give coverage from positions that may normally look to be obstructed on a traditional 2-dimensional layout. This allows us at Security Camera King to provide our customers with a more accurate camera count.  These counts are also far more precise in their coverage, which as a result allows you to express to the governing authority more directly what areas will be visible to the camera. For example, if you have a warehouse with a 15 foot ceiling and a 10 foot high grow, it would appear on a 2D layout as if the camera isn’t covering the full grow or that the camera’s vision is blocked by the grow itself.  However, on a 3D sketch up, you can clearly see the camera is overlooking the grow, providing coverage of all persons working on your product.  In another example we may find that a camera can cover 2 egress points because of a unique position not normally discernable on a 2d floor plan.  This level of detail gives Colorado’s Department of Revenue for Amendment 64 licensees or Washington’s Liquor Control Board for Initiative 502 applicants, a more precise depiction of your intent, allowing for faster approval of applications and licenses.  The level of detail a 3D rendering rendering is not just useful to the Liquor Control Board and Department of Revenue alone!


Modeling Advantages for Investors, Contractors, Employees and Coworkers

Modeling can also assist in providing an example of your idea to investors, co-workers, employees or even contractors during the construction portion.  Since we create our 3-Dimensional model after your floor plan, even a layout still in the preliminary planning process can be done long before construction of your facility is complete.  Even a pencil drawing with proper measurements included can be converted to a moderately detailed model with relative ease.  This allows us to help you to present your intentions to potential investors and clients. It can include specifics of your surveillance and access control solutions, and additionally your facility’s production, processing, and/or sales floor organization.  On some projects, we can even create short video clips to expressly present you with the products we are quoting you as well as a 3D walk-through of your facility, in addition to the 3-Dimensional model itself.  If you are in a renovation phase, modeling may also help allow you to illustrate where walls will be relocated, rooms portioned, windows paved over, alarm systems placed, and how your layout will change to both contractors and the governing authority.  The more detail you present us with, the larger the detail we can include on your quote and model.


Modeling Advantages for Initiative 502 and Amendment 64: Visual & Spatial Prep

Even if you are as far along as simply completing your order and placing cameras accordingly on an already state approved layout, a model can help you estimate where you will be laying or running cable and what areas you may have that will potentially be more difficult than others.  Modeling will help you with spatial planning and visual preparation, in general, by giving you a more detailed way to estimate cable lengths, in addition to envisioning positions of various other devices and systems.

For example, it may be useful in plotting access control locations and to see just which systems will be most beneficial to add security to your facility. There are a few concerns, however, that should be noted when using modeling as with any layout in that it cannot replace a physical walk-through that is necessary with the installation of any equipment.  That is to say that the engineering infrastructure of the facility needs to be taken into account, as well as any furniture and accessories that may not be visible on the model or layout when it comes to the installation.  Even so, many times these features can be included in the layout or floor plan and even without such features having a 3-Dimensional model is definitely an advantage!

Modeling Advantages for Initiative 502 and Amendment 64 Video

Our knowledgeable team can definitely help you answer the questions of “How many cameras do I need?” and “Where and how do I position these cameras?” We can also revise your layout and create a 3D model to give you a real visual and virtual representation of your facility, even if it hasn’t been constructed yet!  This will allow you to present your facility to the State with sincere confidence with our guarantee.  Not only that, but you now have a 3-Dimensional rendering to present to investors and future clients!  We here at Security Camera King are always looking to provide excellence in service to our clients, and this is just one of the ways we show our support!


Knowledge is Power! – Access Control and Circuits.

Written By:
Wednesday, November 19th, 2014


As you may all know serves The Surveillance Industry as well as the Access Control Industry. These two industries are different from one another and it can be overwhelming when installing or troubleshooting your system, mainly because transitioning from surveillance equipment to access control is not the same. Access control requires some knowledge of how circuits work. In this article, I will go over some basic circuit knowledge that will allow you to install or know what to do in a case where you will need to troubleshoot your system. This knowledge can come in handy especially in an emergency situation.

Lets start by going over open and closed circuits.

When a device has a label that reads “Normally Open” this means that in a normal state there is no electric current flowing through the circuit. Think of it as a momentary switch (ex. door bell) when the button is depressed it completes the circuit this allows the flow of electricity and the device will turn on a chime in the case of a door bell.

Lets see how a door bell circuit works.


The image on the top illustrates the circuit in an open state where there is no flow of electricity, the image on the bottom shows the circuit in a closed state where electricity will flow, allowing the coil on the electromagnet to become energized and with the assistance of a spring giving you the ringing sound.

Now that we know the differences between open and closed circuits I will go over how an access control panel functions and then we can move on to see how they should be connected and why it is very important to know these two basic circuit functions (Normally Open and Normally Closed).

An access control system is simply a controller that triggers ON or OFF circuits by means of relays. This means that any output from the relays can turn ON or OFF [Open or Close Circuits] devices such as a Mag Lock, which is a high powered Magnet that is normally rated in pounds. Closing the circuit in a MagLock will create an Electromagnetic bond that keeps the door closed until there is an input from a reader to the control panel. The control panel opens or closes the circuit using its relays. The diagram shown below illustrates how a Mag Lock functions in the “Control Panel”. In this case it is the “Switch” part.


Lets see how a “Strike” circuit works. As you can see it works similar to the Mag Lock where the circuits closes and a coil will retract a rod that will allow the person to gain entry. This is called a solenoid.


Here is a Video on how this is accomplished.

Now that we have covered the basics, let’s move to some other details such as Fail Safe devices. These are devices that even when there is no power the device will continue to be in a locked position, keeping the door secure. Fail Safe devices are typically door strikes.

Electromagnetic Lock Types.

With Door Status Switch: This device will show an open or closed door status to the system, allowing you to know if there is a door that is malfunctioning or someone has propped the door with an object.

With Delay: This will give you a few seconds before the mag lock will release the door. This is most common in a high security area.

The use of Mag Locks or Door Strikes are the most popular ways to control the entry or exit of a building.

Lets see how a one door system with a stand alone controller looks like.


This is the easiest way to get a small business with only one door up and running with their access control. In the picture above, we see a Door Lock [Door Strike] connected to the Stand-alone controller with door sensors, as well as an exit and Reader. The user identifies himself with the use of a Card or Keyfob at the reader which sends a signal to the controller. The controller goes in its database and sees that this user has access and then completes the circuit to the Door Strike allowing the person entry.

Seems simple?

Lets try it with a control board instead of a standalone. This is good for a medium size business. In this illustration you will see integration with other devices such as a surveillance system by using its alarm outputs. We can now use the cameras as another form of a motion sensor. We can also integrate the system with a fire alarm panel. There is a lot of possibilities, and it is all about knowing the limitations of each board and system.


Lets move on to battery back up and the use of fuses and Diodes.

When it comes to any security system, one will have the needs to keep these systems running even when there is not power present in the building, either by a malfunction of the Electrical System or by tampering.

There are different capacities of inverters such as 200VA, 250VA, 350VA, 400VA, 450VA, 500VA, 625VA, 1200VA, etc. The capacity of the inverter should be chosen based on how much watt of appliances you power at a time.

For a UPS with 875Va we can use a maximum load of 640 watts. For a UPS with 677Va we can us a maximum load of 540 watts

The main thing we have to understand is that whatever may be the UPS wattage, the battery backup will not vary. The battery backup will only vary depending on the battery Ah and the Usage Load.

To calculate UPS backup, We have a simple formula.

UPS Backup = Battery Ah * (Volts/Load) * (1/Powerfactor)

For Example:

Lets calculate the back up for a system UPS

Load is the usage power. Suppose we are running a PC then the load is around 300 watts.
Power Factor varies for device to device, the average power factor is 1.4

Voltage is the voltage of the battery.
For a single battery the voltage is 12v.
If the batteries are connected in a series   Voltage = 12 * no. of batteries.

Battery Ah is the battery ampere used for the ups,

System UPS battery AH is 7

Then   Battery Backup

=  7 * (12/300) * (1/1.4)
=  7 * (0.04) * (0.7)
=   0.19 hours
=    19 Minutes

Note: You can use the same formula for calculating the battery backup for UPS or an INVERTER.

Battery back up systems can become complex if you are looking to power the devices for more than 30 minutes. Knowing how to calculate what you need is crucial when purchasing the correct back up system or building your own.

This also functions for a Solar Power system. In the case of a Solar Powered System you will have to take into account the Solar Cells as well as the location and knowing peak Sun hours. Here is an article that goes into detail in regards to solar power.


Lets move on to the Function a Diode can have on an access control System. For this we need to know what a Diode’s function is. A diode is a small device with two terminals [+ side is called the Anode and the – side is called the cathode]. This device allows the flow of current only in one direction. This means that in a case where there is  malfunction and there is a device with a short, it will protect the device by not allowing current to flow back into the circuit.

Fun Fact: ;P

A Diode can be found on Light Emitting Diodes also known as LED’s. They work by electroluminescence. Try saying that 3 times, lol.  They work in the same principal where the + side [Anode] and the – side [cathode] and a Semiconductor crystal is in between these two. Depending on the semiconductor is the color that it will emit.


Lets move on to Fuses.

Fuses are devices that have have a small strip of metal, usually encased inside a cylindrical glass with two ends that connect to a terminal.  They are widely used in the electrical industry as well as the electronic industry. These devices will allow current to flow, but when the amperage is high above its rating the small strip inside will melt, cutting electrical flow while preventing damage to the circuit.

The Fuse is represented by these symbols.


Now that you know about how the circuits work when it comes to Access control, you can safely install your equipment as well as make a wise decision as to what you need. Keep in mind that the conductors carrying the signals from one device to another is also important, as well as grounding properly each control board if utilizing more than one. Consult our Sales team for any questions that you may have and we can also assist you with Designing the perfect system for your needs.