EMF Meter: Detect electromagnetic field radiation with this versatile device! Measures 5HZ-3500MHz with 3 levels of audible and visual alarms - MET01. 【Three Functions】: A 3-in-1 EMF meter for electric field, electromagnetic field, and temperature testing. Indicator lights (green, yellow, and red) show different signal strength levels. Audible alarm sounds when measurements exceed a certain value (can be muted). Widely used for measuring electromagnetic radiation from machines, low-frequency appliances, and high-frequency devices. 【Additional Feature】: LCD screen and flashlight for easy reading in low light. 【Usage Scenario】: Suitable for home use to measure radiation from microwaves, TVs, computers, routers, mobile phones, induction cookers, rice cookers, refrigerators, electrical wires, etc. Tripod mountable for hands-free operation. Large backlit screen for clear readings. Audible and visual alarms indicate radiation intensity levels. Multifunction button for easy operation. Electromagnetic Field Intensity Measurement Range: 0.1-199.9 mG / 0.01-19.99 µT Resolution: 0.1 mG / 0.01 µT Alarm Threshold: < 4.0 mG /> 0.4 µT Electric Field Intensity Measurement Range: 1-1999 V/M Resolution: 1 V/M Alarm Threshold: > 40 V/M Ambient Temperature Measurement: Range 0~50 / 32~122 Frequency Range: 5Hz – 3500MHz Automatic shutdown after 15 minutes of inactivity. Power Source: 1* “9V” battery (included)