This counter Spy device ensures security and safety and lets you know if you are being spied upon. Spy devices emit a wireless signal that is received by a receiver. Any wireless signal being emitted between the frequency ranges of 1 - 6500MHz can be detected by this spy detector. Powered by 2 AAA batteries, take the CVMV-J19 everywhere with you, hotels, motels and make sure your not being watched. With world wide elevated security and big brother always on the look out, you just never know. This wifi signal and camera lens detector helps you counter spying and surveillance. From hidden camera lenses to Wifi signals being emitted, you will be able to detect and find exactly where the spy cameras are and where the Wi-Fi signals are coming from.