... accurately identify eavesdropping, telephone tapping and digital eavesdropping, tracking, vehicle eavesdropping, wired camera,wireless camera, electrical sources can ... ) detection, 3. Beep detection, 4 LED display detection, 5. Headset5) Low-voltage prompts, built-in rechargeable battery.6) ... all within sight of the camera facing the camera. Wireless Sweep: frequency detection range (1MHz-6.5GHz) ...