Use the latest pinhole style sound monitor (AKA microphone) in conjunction with your security cameras to pick up high quality recordings of customers, employees, etc. to be able to have a more accurate idea of what is going on in your home or business. Please refer to local laws in regard to the legality of using this without previous notice and consent. These use built-in digital processing circuits along with dynamic noise reduction controls to help deliver clear sounding voice while minimizing noise and echo. The design is great because it’s tiny enough to hide it from sight while still delivering a monitoring range of 10-50m².
Power Supply: DC9-12V
Electric Current: 20mA
Frequency range: 100~100KHz
Output impedance: 600Ω non equalibrium
Ehhhh, its so so
Review by Matt Bradshaw(Indiana USA) on May 28, 2018 The reviewer has last purchased this item on May 16, 2018
I installed these over the last weekend. They do drowned out a lot of backround noise, but don't seem to pickup voices as well as we were hoping. Now given this was one of the cheaper microphones, I just expected a little bit better performance, so I 3 *'d it. If you are up close it sounds fantastic. If your more than 5 feet away it gets real quiet and muffled.
We will be upgrading these in the future, I'm sure.