Smart 4-in-1 DC Electricity Usage Monitor: LCD Display, 6.5-100V Voltage, 0-100A Current, Power Energy Meter Multimeter Ammeter Voltmeter with 100A Current Shunt Review

This is a high quality meter that relies heavily on the accuracy of the current shunt. For the 50 amp version the current was 12.63 amps (see figure) when the 4.5 digit ammeter read 12.98 amps. If that accuracy is enough then this is a great meter at a good price. The problem was related to the current shunt not being properly cut. In fact, it turned out that the shunt had not been severed at all. I also have a 100 amp version of this meter and it measures current with much better accuracy. I…

They appear to be accurate, bright backlight, display updates maybe every second or so (good), no noticeable heat. I wish the wires from the amp terminals were longer, but splicing the wires doesn't seem to affect their accuracy. I'm sure someone makes an assembled A and B leg counter, but I haven't been able to find one for a reasonable price. I think I've got about fifty dollars to do with this and it saves me the trouble of removing the circuit breaker cover, pulling out my Fluke multimeter…

This is a compact meter that gives you six readings on a single power lead around which you can clip a small ring magnet. The meter displays voltage, current, watts, watt hours, frequency and power factor. The small ring clip opens so you don't have to cut or break the cable you're measuring. The hinge is made out of cheap plastic, so it would be a good idea to break the habit of opening and closing it as the plastic will break after a certain number of cycles. The wires on the ring terminal…