1. Laser detection, 2. Vibration (Mute) detection, 3. Beep detection, 4 LED display detection, 5. Headset Multifunctional Detector / Hidden Camera Detector / Laser Detector This product uses active laser scanning and passive wireless method of combing the sweep can be accurately identified: eavesdropping devices. Telephone eavesdropping, digital eavesdropping, tracking, vehicle eavesdropping, ...