Wintact WT3122 Household Electromagnetic Radiation Tester Feature: 1. It can test electric field strength and magnetic field strength to reach the optimal test result. Its widely used to test and learn electromagnetic radiation situation indoor and outdoor. Suitable to measure the electro-magnetic generated machine, measure low frequency appliance and high frequency radiation appliance. 2. One instrument with two uses, it can test the electric field and the magnetic field radiation at the same time. 2. Sound-light alarm, when the test result exceeds the safe value, the instrument will alarm automatically. 3. Data locking, one-key lock of the radiation value and easily read the value. 4. Measure the Environment Temperature: with 2 temperature units (Celsius and Fahrenheit). 5. Radiation assessment, remind you whether the radiation value is safe or not. 6. Fashionable design, easy on-hand operation, its easy to carry and make field measurement. Specifications: 1. Material: ABS Plastic 2. Unit: Vm (Electric Field), micro T mG(Magnetic Field) 3. Accuracy: Electric: 1Vm, Magnetic: 0.01 micro T 0.1mG 4. Range: Electric: 1-1999Vm, Magnetic: 0.01-99.99 micro T 0.1-999.9mG 5. Alarm Threshold: Electric: 40Vm, Magnetic: 0.4 micro T4mG 6. Display: 3-12 LCD display 7. Test Bandwidth: 5Hz-3500MHz 8. Sampling Time: about 0.4 Seconds 9. Test Mode: Bimodule Synchronous Test 10. Overload Indication: Max value of measurement range on LCD 11. Operating Temperature: 0-50 Celsius degree 12. Operating Humidity: relative Humidity less than 80% 13. Working Voltage: 3.7V 14. Power Supply: 3.7V 600mAh lithium battery 15. Size: 134 x 61 x 25mm 16. Weight: 131.3g