🔌 DROK 100014: High Precision LED Digital Voltmeter Ammeter 2in1 Multimeter – DC 0-100V, 10A – 12V/24V Voltage Amperage Meter Volt Amp Gauge Panel Review

I plugged this into a DC outlet (like a cigarette lighter) to track how much/fast my CPAP's battery is draining so I can plan a hike. The instructions are practically useless. I've included my own chart along with some photos. First I swapped + and - in the outlet. My CPAP obviously has reverse protection, so everything survived. After 20-30 minutes of troubleshooting I finally figured out my error and fixed it. I checked with a CHEAP voltammeter and the current reading is close enough for my…

Works well and seems very accurate for both voltage and current according to several good multimeters I have. I use it to monitor a car battery's parasitic discharge (the current drawn when the car is off) and when everything is fine it's around 10mA. It would be nice if it could read voltage to the nearest hundredth as current, but I knew it could only read voltage to the nearest tenth when I bought it. Mine only draws 10mA of current to power itself and when properly connected, that current…

If you want a nice glow on the panel, that's fine. I was using this on a battery project for my ham radio gear and the display struck me as odd so I pulled it out and placed it on my desk with the correct power supply and electronic load. In short, voltage accuracy is poor and current accuracy is lacking. Regarding the voltage, I've tried setting the potentiometer to the middle of the range I'm interested in which is 13.2V, but the voltage shown is off by 10-12% per volt anyway. For the current

I was looking for an amp and volt meter for my 100 watt solar instrument, searched for a small digital meter like this and finally decided to try this one. It works as expected and I love it. I bought another one the night it was delivered. Why I chose this one - Up to 10A, no external shunt. (My max current is about 6-7A) - The power supply is flexible, use the same power supply you want to measure the current with, or use an independent power supply for the power meter. - Size appropriate for

I've tried pretty much every configuration suggested here on Revain and in the wild. Compared to a multimeter, this device is constantly off - either heavily (more than 1 amp at one point), or simply reading 0.3 / 0.4 volts. I just can't get the probe's yellow line to show the correct voltage, making a simple power calculation impossible. My test setup used a 5 volt voltage regulator (testing different regulators to see which would work best for the project). 12V input, 5V regulator. There is a