One instrument with two uses. It can test the electric field and magnetic field radiation at the same time. It has a sound-light alarm that will alarm automatically when the test result exceeds the safe value. It also has a data locking feature that will allow you to lock the radiation value with one button press.
Unit: electric field: V / m, the magnetic field: μT
Accuracy: electric: 1V / m, magnetic 0.01μT
Range: electric: 1-1999V / m, magnetic 0.01-19.99μT
Alarm Threshold: electric: 40V / m, magnetic 0.4μT
Reading display: 3 1/2 LCD display
Test Bandwidth: 5Hz - 3500MHz
Sampling time: About 0.4 seconds
Test mode: Bimodule Synchronous test
Over range indication: LCD displays "1"
Operating Temperature: 0C-50C
Operating Humidity: < 80%
Operating voltage: 9V
Dimensions: 63.6 * 31 * 125.8mm
Power: 9V 6F22 battery (NOT included)