... method can accurately identify eavesdropping, telephone tapping and digital eavesdropping, tracking, vehicle eavesdropping, wireledd camera ... eavesdropping, videotaping, fraud, protection of person privacy and confidential information. Functions :1) auto-detection function, ... Beep detection, 4 LED display detection, 5. Headset5) Low-voltage prompts, built-in rechargeable battery.6) Laser detection: ...