Product Description: Quantity: one set Technical Indicators: unit Electric Field: V/m, magnetic field uT Accuracy: electric field: 1 V/m, magnetic field 0.01 uT Range: electric field: 1-1999v/m magnetic field 0.01-19.99uT Electric field alarm threshold: 40 V/m, magnetic field 0.4 uT Reading display 3-1/2 digit LCD display Test bandwidth 5Hz-3500MHz Sampling time approximately 0.4 seconds Dual test mode simultaneous test overload test LCD display "1" data lock Auto power off Average and maximum value Low battery reminder< /p> Operating temperature: 0oC-50oc Operating humidity: less than 80% relative humidity Size: 63.6*31*125.8mm Weight: 146g Power supply: 9V battery One instrument with two uses, it can test electric field and magnetic field radiation at the same time. Sound light alarm, when the test result exceeds the safe value, the instrument will react automatically. Data lock, one-key lock of radiation value. Radiation assessment reminds you whether the radiation value is safe or not. LCD display of values for easy reading.