AstroAI AM33D Digital Multimeter 2000 Counts, with DC/AC Voltmeter and Ohm/Volt/Amp Meter, Measures Voltage, Current, Resistance, Tests Live Wire, Continuity

The backlight of the multimeter will gradually dim after about 10 seconds, and this function is to save power. Please press and hold the "Hold" button for 2s to activate the backlight.

The multimeter may be affected by the surrounding magnetic field before the test, so the numbers will jump on the screen when the test leads are not connected. This phenomenon does not affect the use of multimeter.

Please remove the screws and take it off, then check if the battery and the two fuses are in good condition. Please contact our support team directly for help if them are in good condition: support@astroai.com.

Please note this model cannot AC current, you can consider out other 4000c/6000c multimeter.