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

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.

works well, east install, BRIGHT display. great value

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.

Good monitor. Seller sent replacement products with one call. Comes with a basic wiring diagram. As pictures and video show, I am using two monitors to monitor each leg of a single phase 30amp 120/240 volt generator circuit feeding my house during power outages. because the Generator only has an hour meter (Predator 9500 Inverter Generator). The issue I have is Monitor #1 shows correct voltage (124.8 volts between X/L1/Hot leg #1 and neutral) BUT Monitor #2 voltage measurement is incorrect (250+ volts between Y/L2/Hot leg #2 and neutral). The reason I know that is when I test points 1 & 2 on Monitor #2, my Fluke 87V meter indicates 124.9 volts not 250+ volts. I tried two additional meters the seller sent me only to get the same incorrect voltage. I also tested the generator to make sure it was generating the correct voltages with my Fluke 87V as well, which it was (124+ volts between X and neutral & 124+ volts between Y and neutral). I have included my wiring diagram with the exact components used in my electrical system. Any help from Electrical engineers or experienced electricians would be greatly appreciated as to why Meter #2 is showing 250+ volts? The materials/components I used in this system are as follows: - Midwest R281CB1LK meter socket/distribution panel - Midwest model #GE200ZUL 150 & 200 amp interlock kit - Predator 9500 Inverter Generator - smseace circuit breaker distribution box (8 way) - Wago 10awg Lever nuts (5 conductor and 3 conductor) - GearIT 40 feet 120/240 volt 30amp locking power cord for generators - #10 awg thhn single conductor stranded wire - two Keotek single phase energy monitors (D52-2047HD) - GE model # T030N 30Amp temporary power inlet 1-1/2” rigid conduit LR, Myers hubs & close nipples 3/4” rigid conduit Myers hubs and close nipples 12”x12”x1/8” Aluminum plate cut to fit the smeace 8 way box 1/4” & 10-24 Caulk-in anchors, 1/4” hardware, & 10-24 hardware Thanks for any knowledge or help you can share with me.

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.

I have a room that is all on one 20 amp circuit and am using this to monitor energy usage for the single room/circuit. Installation is straight forward and I like the look of this unit, it tells me what I wanted to know. Will be nice to know exactly how many kwh I am using each month/year. Price is great as well.

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.

Despues de 12 años de uso, ha dejado de funcionar mi medidor Ketotek, me mide parcialmente por que un condensador ha calentado el cable plano qye lleva en su interior, tenia el sencillo, sin contador. Ahora he comprado el superior, wue tiene contador, y va perfectamente, facil de instalar y con instrucciones. Medicion exacta. Recomiendo el producto. El tamaño viene a ser tres magnetotermicos DPN. Es muy facil de instalar no necesita ser electricista pero si debe mantener unas medidas de seguridad, desconecte la electricidad del ICP o del Termico general de entrada. Mida que no haya corriente y siga las instrucciones de montaje. Puede pasar por el orificio tanto la fase como el neutro, solo uno. Tiene que alimentar desde el termico de alumbrado 10A con cable de 1.5mm el medidor Ketoket, en el tornillo 1 fase, en el 2 neutro. Si la instalacion es antigua puede ponerlo en cuadro ICP. Si es mas moderna en su cuadro y si no cabe, en uno exterior encima del cuadro. Pude ponerlo delante o detras del diferencial pero siempre protegido por delante de un termico y su alimentacion al de 10A.espero wue le pueda servir a slguien mi explicacion.

Utilidad

L'apparecchio appare di buona qualità ed offre prestazioni allineate alla descrizione. Di facile installazione ed impatto visivo, sempre ben leggibile. Estremamente utile per la gestione efficace della potenza elettrica installata e la prevenzione di distacchi improvvisi per supero del limite. Si spera che le sue buone caratteristiche si mantengano inalterate nel tempo.

Utilisé pour enregistrer sur une année l'utilisation de ma wallbox pour recharger une voiture électrique. Fonctioinnel, lisible, complet.

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)