... 1.laser detection 2.Vibration detection 3.beep detection,led display detection 4. range:1MHz - 6.5GHz mobile phone ... , videotaping, fraud, protection of personal privacy and confidential information. Function as follows:automatic detection, the host carry, ... )laser detection, 2)Vibration detection,3)beep detection,4)led display detection,5)headsetLow voltage prompts, built-in rechargeable battery ...