Features: Protect your privacy with our wireless signal detector with antispys screen (battery powered). Stay safefrom prying eyes and potential signal interference. Designed with a built in display screen, our detector allows you to easily monitors and detect signals within the 5mhz frequency ranges. Idealfor individuals who value their privacy and want to ensure that theirpersonal information remain secure. Perfects for professionals, business traveler, and anyone concerned about potential eavesdropping or signal interference. Whether you're at home, in the offices, or on thegos, our wireless signal detector provides reliable protections against unauthorized access and signal interference. Use it in your living room, office, hotel room, or any other location where privacy is a priority. Take control of your privacy and enjoy peace of mind with our wireless signal detector. With its sleek design and advanced features, it's the perfect solution for safeguarding yourpersonal information and ensuring a secure environment. Specifications: Material:Metal Size:Approx.90x35x10mm/3.54x1.37x0.39inch Color:Black/Blue Detection frequency band: 5MHz Scope of work: 10m Operating voltage: 5V Package Includes: 1x Signal Detector note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.