KETOTEK Energy Meter Single Phase AC40-300V 100A, Din Rail KWH Meter, Power Electricity Volt Amp Watt Consumption Voltmeter Ammeter with CT

I've used a lot of these now and I can't fault them at all. Being in the trade and installing heat pumps and a/c for a living, these come in very handy. Originally bought as a gadget for a hot tub I had at home to compare between an electric heater and hot tub heat pump for running costs. Worked so well I've started using them in customers houses now. Easy to read, easy to install and so far can't complain in terms of quality or reliability and I'm sure I would have heard back from unsatisfied customers by now. They're not a DIY install as you need electrical training/experience to work on any fuse board etc but they're not difficult to install at all. Terminals bite securely, no lose threads or wrung threads etc. Buying more for another job as I write this. Value for money

I am well impressed with these little units. The digits are very easy to read and it appears accurate. In particular it surpasses all the other plug in units which are often difficult to read especially in inaccessivle places and which are practically useless in the absence of a battery as their readings are los as soon as unplugged or if the power fails. These units retain cumulative energy usage and can also be reset manually when required.I bought two to make up my own energy monitors and needed a housing for them. Initially I bought two ASHATA 3 module consumer unit boxes. They are rubbish, flimsy, difficult to open and far larger than advertised so they are going back. In their place I bought two Wylex ESE2 enclosueres which are good looking and very sturdy boxes which will make perfect housings. Bet bit - they are only £3.55 each - incredible!! A bit of work fitting plugs/wantering sockets and I shall have two first rate energy monitors.

Good but there is cheaper than this. I would buy one from Ebay for cheaper

I bought this to get more specific data about my heat pump energy usage, as the built in Mitsubishi data is too high level. I particularly like the fact that this device does not interfere with the wiring, as the sensing is done by running a power wire through a hole in the device, unlike some others where you connect L & N in, and L & N out. If the device were to fail, it will not effect my heat pump.

Very easy to fit. Fitted into "Wylex ESE2 Insulated Electrical Circuit Breaker Enclosure". This was modified with a small bit of filing.

Easy to install on a DIN rail (if you don't know what a DIN rail is then you probably shouldn't be trying to install something like this), lots of info, easy to read, easy to reset. Accuracy? Who knows but no reason to suspect it's not accurate.

Quick delivery. Good price. Easy to install. Worked perfectly

Purchased to monitor 10A car charger, mounted in Wylex box( as per other suggestions ), says it’s din rail compatible…it is with the careful use of a small file ( but not out of the box). Instructions adequate, installation straight forward and operation easy, bright display. Overall pleased with result