Features: 1.Practical Uses: Can detect 2G, 3G, 4G and WiFi devices in hotels, rental houses, bedrooms, fitting rooms, conference rooms, cars, etc. It can also detect 1.2G, 2.4G, 5.8G wireless and wired cameras. 2.Easy Detecting: According to the power of the transmitter, the maximum detectable range is 10 meters. The closer you are to the signal source, the louder the alarm sound or vibration will be. Intelligently and accurately find the signal source. 3.Simple Working: Through the button to expand or narrow the detection range, lock the target, eliminate environmental interference, and prevent false alarms. 4.Better Designs: The detection range can get to 1MHz?8000MHz, while the compact size and light weight make the carrying much more convenient. 5.Smart Charging: Long standby time, charging for 2 hours, standby time for 1 month, ideal for both indoor and outdoor detecting. Item Type: Signal Detector Frequency Range: 1MHz-8000MHz Detection Dynamic Range: >73db Indication Method: 9 level LED light emitting indication and pitch change indicator. Power Supply: Built in 3.7V 1500mah 803450 polymer lithium battery, with built in battery. Working Current: 60mA Continuous Working: 10-15 hours. Detection Sensitivity: