KETOTEK Single Phase Energy Meter Din Rail Electricity Usage Monitor AC 40-300V 100A Voltmeter Ammeter Watt Kwh Frequency Power Meter Built-in CT 110V

works well, east install, BRIGHT display. great value

This Energy Meter seems to work as advertised. I tested the device on some various equipment. 1st was my AT&T Fiber Router / Modem. The power factor was about .58, not good. There is a transformer type power supply. 2nd test was a 200 Watt tungsten light bulb. The PF = 1.00 This is expected the load is pure resistance.

Exactly what I was looking for. Simple, inexpensive and very well made. I wanted to monitor power usage to a camper by brother in law is staying in on my property and it has performed flawlessly for that. We reset it monthly and he pays me13cents per KWAH, that way he doesn't feel bad and neither do I. Yes, in TN we only pay $0.13 per kilowatt hour in 2026. Glad I dont live up north anymore.

I am using this energy meter to track the power usage of an electric water heater. It is doing a good job but the KWh it is coming up with is incorrect because its voltmeter is reading 3 volts high. The amp meter part is spot on.

I like this meter. The colors show up well even in bright outside light. I'm using several of these to measure the output of my solar inverters. As the instructions state, it doesn't matter which direction the current is flowing. It will measure in both directions, just not differentiate between the two. They also fit well among other DIN breakers.

It does exactly what they claim it does. The one con that I have is the page says it does 220 volts, which would be true of single phase 220 volts, but in the US we have 240 volts split phase which means it will only display and record half of the power.

Screen reading is very clear even in the dark. But the seller didn't add "circuit breaker network monitor" which is very useful for the installation.

Works very well but the clamping mechanism for the wire is very week on the first on i bought months ago, The hot side stripped by just hand tightening before it even started having any resistance at all. Today I received my 2nd one I bought myself and didnt have the same issue. But, The heads of the screws are a slightly different color and are very soft. I was able to get the wires tightened in the clamps safely this time but the heads deformed and half stripped from very little force right as the clamp started to resist and tightened. Overall the meter itself works very well on both units and accuracy seems pretty spot on but the input design needs redesigned especially for a high voltage ac unit. Would have gave 5 stars if the ports and screws weren't so fragile.

Il misuratore si presenta bene ed è di bell'aspetto. Si monta con estrema facilità e cosa molto utile ed importante, il trasformatore di corrente è integrato nel misuratore. Riguardo a quest'ultimo, ho letto di tutto sul conduttore da far passare: chi dice il neutro, chi dice la fase, chi dice altre simpatiche amenità. Non è importante che a passare sia il neutro o la fase, basta che il conduttore sia parte del circuito di cui si vuole misurare la corrente. La lettura dei valori è semplice e chiara anche se la frequenza di campionamento, forse un tantino elevata, a volte li rende un po' ballerini e fa incrociare gli occhi. La precisione dei valori è assolutamente accettabile per uno strumento da quadro. In sintesi è un buon strumento da quadro, facile da installare e da leggere, fornisce tutte le misurazioni di cui si ha bisogno ed infine, cosa importante, di costo contenuto.

Fonctionne bien depuis presque un ans, l’écran avec les couleurs est pratique pour la lisibilité.

Utilidad

I have installed three units (one per each phase) as a replacement for old analogic amperemeters. Easy installation and works fine providing good information allowing me to check the consumptions of every distribution line at home by switching on and off each individual circuit. Unbalanced phases can be easily recognized in the display numbers if any. I found it quite useful for detecting a switched off LED lights circuit (30 lamps) that was permanently consuming more than 200W. Since the lamps were dimmed to a minimum (and not totally switched off) I was not aware of the consumption amount due to that fact. The reduction in my electricity bill will rapidly pay the investment made in these units and in two new switches. I include photos of the replaced analogic amperemeters and of the new units installed.

This device is working very well and as expected. Easy to connect and a nice colorful display that is easy to read. It is taking up 4 halfslots in a electrical cabinet (mounted on a DIN rail)