Upgraded Brighter LCD Display Night Vision Power Meter Plug, Power Consumption Monitor Energy Voltage Amps Electricity Usage Monitor, Overload Protection, 7 Display Modes for Energy Saving, Watt Meter

Facil de usar solo se conecta a la pared, y en el mismo aparato se conecta el aparato que se quiere monitorear su consumo.

Seems reasonably accurate. I plugged this meter inline with a second, different manufacturer meter and compared them, and the results were similar, for Amps, Watts; that is, within 10% of each other. So either they are both accurate, or both wrong. I agree that the modes and operation is a bit confusing. Some other power meters have separate buttons for Volts, Amps, Watts, KwH, etc rather than one Function button that cycles through different screens. In case I lose the printed manual that came with a device, I like to have an electronic copy on my computer. I could not find a download link on the web. So I took photos of each side of the 1-page, 2-sided manual. See photos, and right-click, Save As or something if you want to store your own copy.And a tip other reviewers have mentioned: Press both the Function and Up buttons together, to reset the time and KwH values back to zero, after plugging into an outlet, if you move the meter and want to measure a new appliance. This method of reset is an alternative method to using the end of pen or paper clip to press the small round hole button in the center of the device labeled "Reset".

This is the first electrical wall meter we've used…maybe one gets what they pay for? I mean, this is reasonably priced but the interface on it, ugh. It has saved us some money already and we have not yet subjected it to more than moderate load, and even then for only short amounts of time, basically just long enough to test how much power is actually being drawn by our portable air purifiers, USB wall chargers, lamp bulbs, stuff like that. Eventually, we'll be using it to test power tools and such…will update if there are any issues with that.Have been using this for a few weeks now and have definitely saved some money by getting rid of wonky wall chargers, draining light bulbs, etc. Still, we wish the interface on this thing was easier to use—it can be frustrating at times as you have to push buttons a lot if you ever move off the screen you want (which, surprise, is often the live watts meter; they should have button on here that just automatically brings one back to that screen, sigh. The easiest thing to do (and hard to do accidentally, thankfully!) is to reset the energy cost clock (by just pushing the first and third buttons from the left simultaneously). While the other screens contain helpful information, moving around between them is a real pain. Setting the local electricity cost was also a pain and NOT intuitive—fortunately, only have to do that one maybe yearly at most, so not a big issue in the grand scheme of things…The three prong plug on the back—ugh! So, how come this doesn't come with a three to two prong adapter, given how bulky this meter is? We basically use it with one all the time in our old two prong sockets…and, um, aren't most of the small devices one tests this with, like, um, two prong? Anyways, one often has to use the two prong adapter on the back just to get this into a socket on the wall without having to unplug anything that might be plugged into the other wall socket at the same plate; if installed without the adapter/extension cord, this meter blocks the other socket at the wall—incredibly frustrating…but we're now just leaving the two prong adapter on the back most of the time.We have not compared the accuracy of this meter with any others, although it would be good to know how much power the meter itself is drawing… especially compared to other meters!Will update if there's more good or bad to report with this meter.

werks great, found some "ghost appliances" using electricty. easy to use.

Sturdy little guy. Used it to figure out how to deal with the frequent power outages on the island.

I got first device from Amazon and it was broken and looks like it was used before. I returned it to Amazon hub and requested a replacement. I got it quickly for free. New device works fine therefore I put 4 stars. Screen is big and easy to read. Unfortunately to get correct screen page you have to push buttons many times. I prefer to have more intuitive interface.

Good product that does all as advertised. Easy to read numbers when backlit (has auto off). Accurate for general use. I suggest user should read the instruction page to understand the functions; then this meter is logical and easy to use. Great bang for the buck investment. I have had it running on various appliances for a number of weeks to determine backup generator / battery needs. Meter is functioning as expected.Seller has very good, responsive customer support, and stands behind their product. Recommend.

It's working very fine and the LED screen really helps, because I've plugged it under my computer desk that does not receive enough light. I bought it to see how much my LCD screens are drawing (which happens to be 15W), and also wanted to see if my PC wakes up randomly, how much current it draws (which is awfully 55~70W). Now that I'm having it, I would say this is an easy-to-use must have tool for gauging device draws, and unplug unnecessary devices to save some money. Some devices consume electricity even in standby mode and this device can help you figure this out.

wanted to check amperage draw and it works