AC Power Meter, 120/240 VAC NEMA 5-15P to NEMA 5-20R Outlet with Breaker & Voltmeter, Dual Socket LCD Digital Real-Time Display, Multifunction Monitor Outlet, Ideal for RVs, Generators, 15 A

Works as intended. Tells you how much energy is used. I got this to test dryers out for efficiency reasons... these plugs do not work with that, but I was able to install new parts to make it work. These are actually intended for RV's or other sources, and I can say I understand why someone may want to do that. Overall, I am happy to have this, but it took me some time because I had to make some changes to the hardware and that was no fault of the company I got it from nor am I sure that my method is what they intended.

very item keep track on my generator

I really like this, I am using it with an inverter connected to my solar setup. I like to know what I am using without getting up and walking into the other room, Its easy to read, mounted nice and the display is lit. The breaker is just a bonus.

This is a heavy duty unit suitable for monitoring a circuit in use.The real time current and voltage readings are good for circuit checks and the cumulative measurements let you know the usage over time.I use it to check shop and similar equipment current draws.

This AC Power Meter replaces a cheap one I used to have which only gave you volts/amps/power. This one has some nice features like Power Factor and power usage over time.It comes with a 14AWG three-conductor power cord that is about ten feet long. There are mounting holes if you want to place this in a fixed location but I’m using this as a portable device.I checked the accuracy with a known load (ultraviolet LED light panel) of 47 Watts power consumption checked against a calibrated reference and it displayed 46.79 Watts (an error of less than one-half of a percent) with a Power Factor of 0.91 indicating there are some reactive components (capacitance and/or inductance) in the LED driver circuit (See photo.)I then plugged my griller into this meter and it measured around 1,395 Watts. Then I tried my toaster and it measured 988.2 Watts. (see photos). Note the Power Factor for each was 0.99 which is essentially 1.0 which is to be expected on a purely resistive load.This device is so easy to use and accurate providing the data you need for determining power usage of appliances around your home or office. It deserves a five-star review!

Buyer beware! The 10 awg wire does not meet US acceptable wire size for a 240 volt, 50 amp circuit. Most web sites recommend a 6 awg wire, which is 2 SIZES LARGER.

As an ex-lineman, I like to monitor various aspects of my residential electrical system. This will be easier now with an AC power meter being offered by Exqutoo, as it allows me to monitor those parameters that I consider important to me.If you want a full breakdown of this product's capabilities, refer to the description on Amazon, as I’m only going to touch on a few things I believe are not covered.First off, the good.For starters it does what it's advertised to do. It seems solidly constructed and I like the general layout and the multi colored info screen as it makes it easier to separate information. A breaker is a nice feature as it allows a fault to trip at the device, versus going all the way back to the main panel breaker box. Four general purpose mounting screws are included, along with drywall inserts. The cord itself is UL rated and is coded SJTW for outside use.The questionable or just confusingThe power cord is rated for outdoor use along with the plug that leads into the box itself. However none of the components on the power meter box are rated for outside use.Accuracy, I took the readings displayed on the power meter and plugged them into an electricians calculator, and for the most part they were comparable. Good enough for me.Is the outlet 15 or 20 amps? A, T-slot in an outlet indicates to me that it is rated for 20 amps, and this matches the breaker which is labeled C20 meaning it’s good for 20 amps. To further confuse things the power cord is 14 gauge which means it is rated for 15 amps. So in the end the power cord wins as it’s only rated for 15 amps. Confusing!The Keweisi power meter can be purchased separately on Amazon, as it’s a pretty common power meter.Physical size? The written product description lists it as .39x.39x.39 which makes for a very small square box. Now if you look at the online photos related to this product you’ll see it has the correct dimensions.Data logger, The online description states that the voltmeter function has logging capabilities. I cannot find anything in the instructions related to that, yet the Timing and Energy consumption readouts appear to have this function.Disassemble? I would like to take this box apart and see if the outlet has any information on its backside. Yet looking into the very deep screw holes, it appears as if it requires a special type of screwdriver that I do not own. Bottom line being you can’t replace the outlet, breaker or display screen if something goes wrong.The temperature can only be displayed in Celsius.Packaging, Now let’s be clear, as I’m referring to the box the package is sold in, and not the box it’s shipped in. When I removed the seller's box, I found the cord plug sticking through the side of the box. I would also like to suggest to the manufacturer that they place something behind the power meter and not just on the faceside to cushion it.Instructions, a single sided instruction sheet is included in the box that does a good job of supplying you with necessary information. My instruction sheet was torn in a few places as the product moved around in the box while shipping. See item (9) above.The online product description refers to this product as a EV Charging Splitter Switch, I really have no idea what they are talking about.Testing, I plugged my air compressor in as it has a pretty good draw on it amperage wise. The short duration startup or surge amperage was 17 amps, running amperage was 11 amps. The breaker never tripped, but then again a short duration amperage of 17 on a 15 amp breaker may not trip it, depending how sensitive it is. I wish I had test equipment to simulate a 20+ amp load, but I don’t.In the end this power meter does the job, albeit I’m a little concerned as to whether it will trip out at 15 or 20 amps. For the DIY type people, you could build this on your own as the breaker, outlet and meter are all available as separate items online.(Update)I've noticed that the cord leading into the base of the power meter has become loose. This fitting is similar to what I refer to as a Liquid Tight. The easiest way to tighten it would be to open the box and tighten the star nut inside. The only thing is, you can't get inside of the box. I've had luck in the past with pulling back on this type of fitting from the outside, and tightening the plastic hex nut, but this time it didn't work. Just to be clear, I’m not referring to the hand tightened fitting on the outside which is used to lock the cord in place. When all else fails place a Zip-tie in the space behind the hex nut, it’s not pretty, but at least it’s tight now.(Second update)I connected two heating guns with a combined amperage draw of 20 amps. The breaker never tripped after five minutes of run time. Charts show 14 gauge wire is rated for 15 amps. Yet there are many variables such as insulation thickness, insulation type (SJTW) wire material (copper/aluminum) wire length, etc that may allow for it to run at a higher amperage, exactly how much higher I haven't been able to figure out.