EMF Meter is an electric field(EF), magnetic field(MF), radio frequency field(RF) 3-in-1 multifuctional meter. It is equipped with a build-in electromagnetic radiation sensor, which can display tha radiation value on LCD screen after processing by the -control chip. You can make reasonable processing or take effective prevention measures toward the electromagnetic radiation according to the test result. One machine three electric field, magnetic field, radio frequency measurement at the same time the new function presents function upgrades, electric field, magnetic field, radio frequency detection at the same time, all-round detection of electromagnetic radiation RF radiation detection RF detection: wireless, Bluetooth, radio equipment, 5G signal RF High-precision sensor measuring accurate fast built-in high-precision electromagnetic radiation sensor, -controller chip processor can quickly accurately measure the value of electromagnetic radiation. It is used to test the measurement of electromagnetic radiation in living environments such as offices, computer rooms, power distribution rooms, transmission towers. Mainly used for testing Router, Bluetooth, Radio equipment, TV, computer, printer, microwave oven, refrigerator, cell towers, for low-frequency , , etc. Sensitivity: EF (electric field): 1V\/m MF (magnetic field): 0.1mG or 0.01uT RF (radio frequency): 0.01mW\/m2 Measurement range: EF:1-1999V\/m MF:0.1-999.9mG or 0.01-99.99uT RF:0.01-19.99mW\/m2 Measurement accuracy: 5% Measurement bwidth: 50Hz-3500MHz Automatic shutdown: default 15 minutes, can be turned off Operating Temperature Humidity:-10-and60;Humidity:Less than 80%RH Battery:1pcs 9V battery (battery not included) Size 147x68.5x28mm Weight: about 132g Colour:black Material:ABS Package Contents: 1 x EMF Detector 1 x Dust-proof bag 1 x English manual Only the above package content, other products are not included. Note: Light reflection different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is and\/- 1-3cm.