Multi-purpose: This radio frequency detector can detect wireless signals from 1 MHz to 8 GHz, including Wi-Fi, audio bugs, surveillance devices, magnetic fields, 2G, 3G, and 4G mobile signals, and GPS trackers. Efficient: This detector combines RF detection and infrared detection to help locate hidden devices easily—whether wireless or hardwired, even if powered off. Ultra-sensitive: Features 12 adjustable sensitivity levels for rapid room sweeps. Helps prevent unauthorized monitoring, interception, and tracking. Privacy Protection: Ideal for use in dressing rooms, tanning beds, bathrooms, locker rooms, hotels, vacation rentals, and meeting rooms. Alerts via vibration and LED indicator—no audible alarm. Lightweight Design: Portable pen-style design (weighs only 1 oz). Provides up to 5 hours of operation on a full charge.