This Anti-Spy Hidden Camera Detector Prevent Monitoring Wireless Signal Detector is a must-have for anyone who values privacy. With a signal detection range of 5 cm-10 meters, this wireless detector can detect signals from hidden cameras and other monitoring devices. It features a special filter optical lens and 6 adjustable signal gear to ensure accurate detection. The detector is portable and easy to use, with a working time of 24 hours and a charging interface of USB. It is equipped with anti-spy features to prevent monitoring and ensure that your privacy is protected. The battery type is 400 mAh polymer lithium batteries, which ensures long-lasting performance. This detector is perfect for anyone who wants to stay safe from intrusive monitoring devices. Open box inspected new, unused