The hk-809 magnetic field/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 band) * Detection range 2.4GHz Wireless camera: 15m2 (standard 10mW Camera) 1.2GHz wireless camera: 26m2 (standard 10mW camera) mobile phone signal 2G/3G/4G: 5-25m2*Magnetic detection sensitivity: 50mm-300mm *Indication: Dual six-level LED light indication Tuning indication