Review on AP-770D TRMS Digital Multimeter: High Precision Tester for NCV Voltage, Current, Resistance, and More by Gerald Barrett

I've only used it briefly but it works well. I like the reading resolution (40,000 counts) but haven't tested the accuracy. I don't like two features. One for diode/resistor where there are 3 different tests. The one I use the most, continuity, is the third option for this setup. Maybe picky, but because I use it so often, it's annoying. Secondly, it is a "protective function for connectors. Different scale settings (e.g. voltage versus current) require the use of different sensor terminals (as is usually the case), but this meter puts a yellow plastic barrier on terminals that should not be used. Seems like a good thing, and yes it is, but that's another annoyance because you have to remove the probes, adjust the dial, and then put the probes back in. Again, it's not a big problem, but it's there. All in all, I'm happy with it for most of my work with electronics.