Wide range of detection frequency: the signal detector can be used to detect vulnerabilities and locators of 2G, 3G, 4G SIM cards, detect high-speed download GPS location data packet locator, can detect equipment 1.2G ~ 5.8G wireless camera, magnetic GPS locator and sleep mode error.High sensitivity: the sensitivity adjustment potentiometer can be adjusted (increase the sensitivity to extend the range detection range or reduce the sensitivity to shorten the detection range) to find the radio power faster. Indication mode: LED light indication, built-in super bright red LED, you can find all cameras surveillance, access control, buttons and mobile phone cameras.  Turn on the power switch of the wireless probe button, and the second indicator lights up to indicate that the power is working normally.High-performance long standby: 10-level digital tube, buzzer mode and vibration mode, you can also use headphones to detect radio frequency signals and the unit has no sound. Built-in 1000mA rechargeable polymer lithium battery, the working time is 4-5 hours, and the charging time is about 2.5 hours. Wide range of applications: it is suitable for detection of eavesdropping and radiation from base stations around residential buildings. It can detect wireless installation and location errors in cars or offices. Used in homes, hotels, bathrooms, locker rooms, business negotiations, confidential meetings, large workshops and research rooms, entertainment venues or as a monitor for school exams.