Item Type: Anti Eavesdropping Detector Detection: 1. Detection, 2. Vibration (Silent) Detection, 3. Beep Detection, 4 LED display A detection. Low voltage indication, built-in rechargeable battery. There is a small compass on the bottom of the front of the product, LED light background, easy to indicate the direction. Material: ABS Color: Black Wireless frequency sweep: frequency detection range (1MHz-6 5GHz) Detection camera distance 10cm-10m (naked eye can identify the red blinking) Receiving frequency range: 1MHz-6500MHz Special special optical lens filter. Parameters:
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