The hk-809 magnetic field or electromagnetic wave detector is not only a highly sensitive electromagnetic wave detector, but also an advanced magnetic field detector. Its original digital linear magnetic field detection technology can effectively detect weak magnetic field signals. Compared with the reed switch detection technology used in ordinary magnetic field detectors, the performance of the reed switch detection technology is greatly improved, which is very beneficial for the search of wireless strong magnetic GPS locators. Magnetic field detection distance up to 200mm Specifications: Frequency range: 1MHz-2.8GHz Detection dynamic range: >72Db Detection sensitivity: 0.03mv (main frequency b) Detection range 2.4GHz Wireless camera: 15m2 (stard 10mW Camera) 1.2GHz wireless camera: 26m2 (stard 10mW camera) mobile phone signal 2G or 3G or 4G: 5-25m2Magnetic detection sensitivity: 50mm-300mm Indication: Dual six-level LED light indication Tuning indication