DROK AC Voltage Display, 3pcs Digital LED Display Voltmeter AC 60-500V Voltage Meter Monitor 110v 220v Volt Detetor Green Red Yellow Signal Indicator Light Panel

The media could not be loaded. Pretty simple to wire it. Digits are very readable. Pretty accurate on reading. Worth of money.

Replaced a bad 3 outlet p;ug on the end of 12g 100’ extension cord with this arrangement. Meter shows voltage and current. This way I know if the load I’m putting on this long cord is dropping the voltage sufficient to cause problems. Amperage measurement is about 5% low.

Works as advertised. It is a Shunt device and description should state this. Outstanding product

Installed one so far on a camper. It's probably within 1 volt to a volt meter. The amps seam off .3 to .4 low at below an amp or 2. Only tested up to 20 amps (30 amp camper input) so far. Haven't tried winding an extra loop thru the current clamp to see how that would fair getting a more accurate reading and having to divide by 2 for actual amps. Easy enough to read at most angles if it's not mounted relatively low like mine is about 14" off the floor, way more than bright enough (green) to read inside atleast . I think it's a good value at this point. Not super accurate but to be expected for for the cost. Stranded copper would most likely be easier to work with attaching power to it rather than 14-2 Romex, less likely to damage terminals while trying to mount it in position. Simple install. Make a proper sized hole, insert and attach wires to circuit line voltage put current clamp around appropriate monitored wire, connect the quick connect from current clamp to meter. Longer clamp wires could be handy but I think you can cut and add a reasonable length of wire without compromising the reading. Wago inline connectors might do that easily. I'll find out on the next install. Great for gauging load on a generator, If you need more accurate than this you are more likely looking in more expensive categories!

Love these little things. They are a very cheap way to monitor your machine

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These work well as an indicator but the measurement is ball park in 1 volt increments, +/- 2 Volts. I put them on some Automatic Transfer Switches to monitor the input and output voltages (picture attached). They work with both 120VAC single phase or 208VAC 3-phase (note that one indicator will only cover one phase).Out of 3 sets (9 total), one meter was defective, reading at double the voltage it should.Longevity is yet to be determined. One set has been running continuously for 6 months without an issue.The output terminals are in a position that you must install the wires AFTER the mounting nut is installed. This makes them difficult to replace if they are recessed in a piece of equipment. In order to aid in installation and replacement, I ran the wires out of the back of the screw terminals.These fit in a 1/2" conduit knockout. If you need to make a hole, I recommend picking up a knockout hole punch such as the TEMCo TH0391 (approx. $24) available on Amazon (https://www.amazon.com/gp/product/B084X69Z67)(available in a larger set, too).I will try to remember to report back after some time to see if these hold up.

I needed a discreet but visible indication of voltage and current. These little panel mount devices are the nicest I have seen. Easy to mount. Sturdy screws and capture plates and good visibility. A good value for the money.