It can detect wireless hidden devices, Wi-Fi devices, spy devices, audio bugs, surveillance equipment, magnetic fields, 2G, 3G, and 4G mobile phone SIM cards, and car GPS trackers from 1 MHz to 8 GHz. This detector combines RF and infrared detectors to easily locate hidden devices and eavesdropping devices, whether they are wireless or wired, even if they are turned off. The anti-spy detector has 12 sensitivity levels. It can scan and detect a room in minutes. It also prevents surveillance, interception, and tracking. It is easy to use in locker rooms, tanning beds, bathrooms, dressing rooms, hotels, AirBnBs, or conference rooms. The hidden device detector sounds an alarm with vibration and an LED indicator, without annoying noise. This bug sweeper detector is as portable as a pen (only 1 ounce). A full charge provides 5 hours of use.