Multi-purpose: This radio frequency finder detects wireless signals from 1 MHz to 8 GHz, including Wi-Fi, bugs, surveillance devices, magnetic fields, 2G, 3G, 4G mobile phone signals, and GPS trackers. Efficient: Combines an RF detector and an infrared detector to locate hidden cameras and bugging devices. Works on both wireless and hardwired devices, even when powered off. Ultra-sensitive: Features 12 sensitivity levels for rapid room sweeps within minutes, helping prevent unauthorized monitoring, interception, and tracking. Privacy Safety: Ideal for use in dressing rooms, tanning beds, bathrooms, locker rooms, hotels, AirBnBs, and meeting rooms. Alerts via vibration and LED indicator without producing noise. Lightweight Design: Portable pen-sized detector weighs only 1 oz. Provides up to 5 hours of operation on a full charge.