Features 2 in 1 Detector: One machine with two functions, this detector can test electric and magnetic field radiation at the same time, easy to use and operate Safe Usage: When the test result exceeds the safe value, this electromagnetic field radiation monitor will automatically alarm Data Retention and Clear LCD Display: One key to lock the radiation value, easy to read the value, radiation evaluation can remind you whether the radiation value is safe High Accuracy Sensor: Equipped with built in electromagnetic radiation sensor, after being processed by the control microchip, the meter can display the radiation value clearly on LCD Application Range: Electromagnetic radiation detectors are mainly used in electrical appliances in life, which effectively helps people stay away from radiation sources and protects them from radiation hazards Specification: Item Type: Electromagnetic Field Radiation Detector Material: ABS Model: ET825 Electric Field: Accuracy: 1V/m-1999V/m Frequency Range: 5Hz-3500MHz Alarm Threshold: 40V/m Resolution: 1V/m Magnetic Field: Accuracy: 0.01μT-99.99μT Alarm Threshold: 0.4μT Resolution: 0.01μT Response Time: 0.4S Battery Model: 3 x 1.5V AAA battery (not included)  Package List: 1 x Electromagnetic Field Radiation Detector 1 x Manual Package List 1 x Electromagnetic Field Radiation Detector 1 x Manual