Features： 1、PRACTICAL: The electromagnetic radiation tester successfully tests and optimises the compatibility of electric and magnetic field radiation for testing and understanding the current state of electromagnetic radiation in indoor and outdoor environments. 2、RADIATION PROTECTION PRODUCTS: The EMF tester has a built in sensor for electromagnetic radiation, which is processed by a micro controller chip and then displays the radiation value in LCD figures. Based on the test results the electromagnetic radiation can be reasonably handled or effectively avoided. 3、ALARM FUNCTION: The digital multi fields EMF meter can detect both electric and magnetic field radiation in one machine, with an audible and visual alarm, and an automatic alarm when the safety value is exceeded; data lock, one key to lock the radiation value. 4、LCD DISPLAY: The digital electromagnetic field radiation detector includes an LCD with a graphical display of radiation value trends, which allows for a radiation assessment and a thoughtful reminder of whether current radiation levels are safe. 5、WIDE APPLICATION: The electromagnetic radiation detector is stylish, compact and portable for easy one handed operation, making it easy to move around or measure in the field. Applications include home, office, outdoor, laboratory, industrial sites etc. Specification： Item Type: Electromagnetic Radiation Tester Material: ABS Size: Approx. 64x28x130mm / 2.5x1.1x5.1in Model: ET925 Battery: 3 x AAA 1.5V ( Not Included) Use: Electromagnetic field radiation detection Scope of Application: Electromagnetic Radiation Monitoring: Home, Office, Outdoor, Industrial Places. Electromagnetic Radiation Detection: Mobile Phone, Computer, TV, Refrigerator, High Voltage Line Radiation Detection. Radiation Protection Products Inspection: Radiation Protection Clothing, Radiation Protection Film and Other Protective Products Effect Inspection. Electric Field: Unit: V/m (Volts Per Metre) Accuracy: 1V/m Measurement Range: 1~1999V/m Alarm Threshold: 40V/m Magnetic Field: Unit: uT (Micro Tesla)/mG Accuracy: 0.01uT/0.1mG Range: 0.01~99.99uT/0.1~999.9mG Alarm Threshold: 0.4uT/4mG Reading Display: 3-1/2 Digit LCD Display Test Bandwidth: 5Hz~3500MHz Sampling Time: Approx. 0.4 Seconds Test Mode: Dual Mode Simultaneous Measurement Overload Indication: LCD Display for Maximum Range Operating Temperature: 0°c~50°c Operating Humidity: Below 80% Relative Humidity Operating Voltage: 4.5V Power Supply: 3 x 1.5V AAA Battery Package List： 1 x Electromagnetic Radiation Tester 1 x Manual