Features 1、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 (℃ and ℉). 5、Radiation assessment, remind you whether the radiation value is safe or not. 6、Fashionable design, easy on-hand operation, it/u0027s easy to carry and make field measurement. Specification This EMF Meter can test electric field strength and magnetic field strength to reach the optimal test result. It's 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. Features: One instrument with two uses, it can test the electric field and the magnetic field radiation at the same time. Sound-light alarm, when the test result exceeds the safe value, the instrument will alarm automatically. Data locking, one-key lock of the radiation value and easily read the value. Measure the Environment Temperature - with 2 temperature units (℃ and ℉). Radiation assessment, remind you whether the radiation value is safe or not. Fashionable design, easy on-hand operation, it's easy to carry and make field measurement. Specifications: Material: ABS Plastic Unit: V/m (Electric Field); μT(Magnetic Field) Accuracy: Electric: 1V/m; Magnetic: 0.01μT Range: Electric: 1-1999V/m; Magnetic: 0.01-99.99μT Alarm Threshold: Electric: 40V/m; Magnetic: 0.4μT Display: 3-1/2 LCD display Test Bandwidth: 5Hz-3500MHz Sampling Time: Approx. 0.4 Seconds Test Mode: Bimodule Synchronous Test Overload Indication: Max value of measurement range on LCD Operating Temperature: 0°C-50°C Operating Humidity: Relative Humidity <80% Working Voltage: 3.7V Power Supply: 3.7V 600mAh lithium battery Item Size: Approx. 133 * 60 * 25mm / 5.24 * 2.36 * 0.99in Item Weight: Approx. 121g / 4.27oz Package Size: Approx. 17.5 * 12 * 5.3cm / 6.89 * 4.73 * 2.09in Package Weight: Approx. 243g / 8.57oz Packing List: 1 * Electromagnetic Radiation Detector 1 * USB Cable 1 * User Manual (English) Package List 1 * Electromagnetic Radiation Detector 1 * USB Cable 1 * User Manual (English)