LCD display, easily read the value.Radiation assessment, remind you whether the radiation value is safe or not.One instrument with two uses. It can test the radiation of electric and magnetic fields at the same time.Sound-light alarm: when the result exceeds the safe value, the instrument will alarm automatically.Data locking: one-key lock of the radiation value.It supports data storage, low battery indication and automatic shutdown.Fashionable design, easy on-hand operation, it& 39;s easy to carry and make field measurement.Item Name: EMF TesterMaterial: ABSUnit: V/m (Electric Field), μT (Magnetic Field)Accuracy: 1V/m (Electric Field), 0.01μT (Magnetic Field)Range: 1-1999V/m (Electric Field), 0.01-19.99μT (Magnetic Field)Alarm Threshold: 40V/m (Electric Field), 0.4μT (Magnetic Field)Display: 3-1/2 Digit LCDTest Bandwidth: 5Hz - 3500MHzSampling Time: about 0.4 SecondsMeasurement Mode: Dual Mode at The Same TimeOverload Indication: Maximum Value of Measurement Range on LCDOperating Temperature: 0-50 Degree Celsius (30-122 Degree Fahrenheit)Operating Humidity: Working Voltage: 3.7VBattery: 1.5V AAA Rechargeable Battery (Included)Features: LCD Display, Portable, Easy to UseSize: 13cm x 6cm x 2.5cm/5.12" x 2.36" x 0.98" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x EMF Tester1 x Charging Cable1 x User Manual