Features: brand new and high quality brand new and high quality 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. One instrument with two uses, it can test the electric field and the magnetic field radiation at the same for 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. Specifications: Material: ABS Size: Approx.13.1x5.8x2.2cm/5.16x2.28x0.87in Unit: V / for m (electric field); μT (magnetic field) Accuracy: Electrical: 1V/for m; Magnetic: 0.01μT Range: Electrical: 1-1999V/for m; Magnetic: 0.01-99.99μT Alarm Threshold: Tlectrical: 40V/for m; Magnetic: 0.4μT Display: 3-1/2 LCD Display Test Bandwidth: 5Hz-3500MHz Sampling Time: about 0.4 seconds Test Mode: Dual Module Synchronous Test Overload Indication: The Maximum Value of the Measuring Range on the LCD Working Temperature: 0°C-50°C Working Humidity: Relative Humidity <80% Working Voltage: 3.7V Power Supply: 3.7V 600mAh Lithium Battery(included) Package Includes: 1x Electromagnetic Radiation Tester note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.