I bought the
DROK® LCD Pocket Digital Multimeter USB, DC 4-25V Voltmeter Ammeter Thermometer Capacity Electricity Time Watt Meter, Volt Amp Electrical Tester with Alarm System, Support QC 2.0 3.0 Fast Charging
…off Amazon. There’s supposedly an alarm on the meter–I guess when the voltage, amperage, or temperature go far enough out of range?–but I didn’t get a manual with this; just a business card.
Please provide either a copy of the manual or at least a full description of the functions the meter has. I assume that this is essentially the same device as the “AmorTek J7-D” meter, with a differently colored display.