1. Main uses: Radio frequency signal detectors can detect eavesdropping devices, wireless hidden cameras, GPS locators, etc. This detector can effectively prevent your information from being leaked. 2. Measurement range: Our camera detector can detect radio waves, 2G, 3G, 4G mobile signals and SIM card errors. Frequency detection range is 50Mhz to 3Ghz. Detection range is 5 cm to 5 m. Helps you trust your surroundings. 3. Excellent sensitivity: Using an upgraded sensitive chip, this camera detector has five levels of sensitivity, allowing you to accurately find the signal source. 4. Easy to carry: This anti-spy detector can be used as a reliable information protector or a convenient travel companion. The detector is lightweight and easy to carry and store. 5. Applicable scenarios: GPS detectors are suitable for homes, offices, travel, hotels, cars, etc., and are safer to use! Specification Item Type: Hidden Device Detector Material: ABS Battery: 3.7V polymer battery 1 Battery capacity: 200mAh (with built-in battery) Working hours: about 10 consecutive hours Magnetic field detection sensitivity: 7 to 35AT Detection dynamic range: 35dB to 45dB Signal detection range: about 5cm to 5m / 2in to 16.4ft packing list 1 x hidden device detector 1 USB cable 1 red lens 1 manual