After you received parcel(battery includes), we sincerely invite you to install a new battery, due to the life of battery about 1 year, maybe it's out of power. Instruction
The tester can be used to measurement the magnitude of electromagnetic field radiation generated by power line,compute monitor, TV set, video/audio machine, microwave oven, or many other similar devices.
1. Turn on the tester. Place the tester at desired position or near the object to be tested, point the sensor to this device.
Note: The nearer the sensor approaches the device, the higher the electromagnetic field radiation level may be.
2. Change the angle between the tester and the device under test until the max. reading is obtained. This max . reading is the measurement result, reading's unit is milligauss(mG). Turn off the tester.
Type: Electromagnetic Field Wave Detector
Measurement Range: 0.1~199.9mG(milligauss)
Accuracy: +/-( 10% of reading +8 digits), at 50Hz/60Hz
Frequency Response: 30Hz~400Hz
Battery: 9V, 6F22 or equivalent, 1 piece
Overrange Indication: only figure "1" shown on the display
Sampling Rate: about 2.5 times/sec
Operation Environment: 0℃~40℃(32℉~104℉), <80%RH
Storage Environment: -10℃~60℃(14℉~140℉), <70%RH
Weight: about 166g