Features This instrument has two functions and can detect electric and magnetic field radiation at the same time. Support color screen display with sound and light alarm, automatic alarm when safety value is exceeded. Supports data lock, a radiation value for key lock. The LCD graphic shows the trend of radiation value. When evaluating electromagnetic radiation, it shows that the current radiation position value is at a safe level. Stylish appearance, small size, one-handed operation, suitable for on-site measurement. Specification: Item Type: Electromagnetic Radiation Tester Material: ABS Size: approx. 133.47 x 59.98 x 25 mm/5.3 x 2.4 x 1.0 inches Technical IndexProjectElectric FieldMagnetic FieldUnitV/MμTAAccuracy1V/M0.01μTR Range1V/M-1999V/M0.01μT-19.99μTAlarm Threshold40V/M0.4μT9.Measurement value display3-1/2-digit LCDTest bandwidth5Hz-3500MHzSampling timeAbout 0.4s 50℃Operating humidityRelative humidity <80%Operating voltage3.7V lithium battery, 600mAh Scope of application: 1. Electromagnetic radiation monitoring: homes, apartments, offices, outdoor areas, industrial premises. 2. Electromagnetic radiation test: mobile phone, computer, TV, refrigerator, high voltage cable radiation test 3. Radiation protection product test: the test effect of radiation protection clothing, radiation protection film and other protective equipment Package contents: 1 x electromagnetic radiation tester, 1 x USB cable, 1 x manual (English language not guaranteed). Note: 1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding.2. Monitors are calibrated differently, the colour of the item shown in the photos may differ slightly from the actual object. Please take the real one as standard. Package List 1 x Electromagnetic Radiation Tester 1 x USB Cable 1 x Manual