Review on DROK Accuracy 0 33 00V 0 999 9MA 3 000A Voltmeter by Dave Hock

These gauges are fine if you can use them. After buying two of these to install into an unmetered triple output power supply I bought, I found that I couldn't use them at all due to the power consumption. to the gauges are not isolated from the measurement circuit, and their negative power line is internally connected to the negative line of the sensor. I'm sure this was done by DROK to save money, but it limits their flexibility. If the manufacturer built a small isolated DC/DC converter to power the meter and placed a current sensor shunt in series with the positive pole and the meters between -33V to +33V and -3A to + 3A they would be ideal in my opinion. They should have cost more, but the increase in cost was definitely worth it.