3pcs AC Current and Voltage Indicator with Two-Digit Display, 22mm Square Head LED Multi-Function Measuring Instrument Monitor Green red Yellow

Does all it says. Only installed 1 of them. Lack of time. But is very precise.

My ONLY problem had to do with me finding a blue version and discovering that its connectors to the current donut were incompatible - which was annoying since I had already partially wired it.So I guess I'd say "be careful if you buy something that looks identical to verify the connectors are compatible if you plan on mixing and matching."Has been in constant use for probably a month with no issues. The casing is plastic, so you probably don't want to put it in situations where it deals with lots of movements, but in my case, I only read it - I don't touch it.And for that, it's a great solution. Very happy.AS EXPECTED

One failed but it may have gotten wet. Works well on my diesel generator load bank and on my smaller gas generator.

Good item. Works as it should. Richey

Two of the units worked great..the third was dim and had erroneous readings. Seller not really responsive. Overall I’m satisfied. Used in panel to display generator load.

These worked great, accurate enough for anything I would ever do. I Read the warning against using with vfd's but tried it anyways and even at low voltage/ speed they immediately all blew resistors. Not sure why, but they worked fine until then. For the cost you can't get anything else that will monitor 3 phases and mount cleanly in a small enclosure

Works Great , used this on my Sailboat Instrument Panel to show when AC Voltage On ! Better than I expected !!!

I added these to a MEP-803a, military surplus generator. My voltage and power guages had failed, and these seem to be adequate replacements for metering.I have voltage/freq/current meters further down the output, and they measure very close, within a few volts and less than 1hz difference.