Joinwin CC308+ Multi-Detector Full-Range All-Round Detector for Hidden Camera/IP Lens/GMS Bug/RF Signal Detector Finder/Multi-Detector Hidden Camera Wireless CCTV Camera RF Detector CC308 New and high quality. Convenient installation. Environmental-friendly economy, high temperature resistant, corrosion resistant. Signal strength indicator can locate the signal at source quickly with means. Adjustable sensitivity adjustment potentiometer (widening the scope to improve the sensitivity or lower sensitivity to detect reduced detection range) quickly identify the radio sources . Detection mode : 1,laser detection, 2 vibration (silent) detection, 3, beep detection, 4 led display detection, 5, headset Low Cvoltage prompts , built-in rechargeable battery . laser detection : windows can be seen through the eyes of all host within sight of the camera opposite the lens , wireless sweep: frequency detection range(1mhz-6.5ghz) Automatic detection, the host carry, when living in the environment with eavesdropping devices, pinhole cameras, casino gambling fraud, host will automatically vibrates when you are under threaten.