CC308 Anti-Spy Signal Bug RF Detector Hidden Camera Laser Lens GSM Device Finder - Mute Vibration + Beep + LED indicator , Earphone and Charger included Adjustable sensitivity adjustment potentiometer (widening the scope to improve the sensitivity or lower sensitivity to detect reduced detection range) quickly identify the radio sources . 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. 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. Detection mode : 1,laser detection, 2 vibration (silent) detection, 3, beep detection, 4 led display detection, 5, headset Laser detection: Windows host can be seen through the eyes of all within sight of the camera facing the camera. Wireless Sweep: frequency detection range (1MHz-6.5GHz)