Soooooooo Ajax, who sell these, KNOW about the problem. I found a forum and the Ajax person you want to communicate with is called Ajay. There is an issue on some versions of hardware and firmware, that if there is a voltage spike over 250v, then CLICK. It switches off. Newer versions don't do it. So buy wisely.
I also have a PV and home battery system and to export electricity the voltage has to be slightly higher than the grid voltage, so that may also have an effect.
Once I found that out I put a time domain graph and my voltage seems to max out at 253+v - bear in mind, we harmonised with the EU at 220/230v. But we didn't.
I have emailed Ajax 2 weeks ago, no reply at all. Not very good. I also messaged the seller from Amazon. Nada as well. Ah well.... Won't buy from them again. Caveat emptor fellow Amazonians!
Anyway
How does such shoddy equipment get allowed to be sold on Amazon?
I bought these throwing the dice on 50/50 based reviews. I failed.
Don't be disappointed, don't buy them.
plug in
pair
move to equipment socket
turn equipment on test functionality
3 - 10 seconds CLUNK. Turned off. Both of them
One of the plugs I can't even get the 13amp plug into as the prongs/sockets inside don't match the moulded plug holes.
This is a known issue that affects some of the plugs produced in the last year. Unfortunately, a lot of resellers just try to sell what they have on stock no matter what the quality is. Don't know why, but I thought that Ajax customers support in the UK is better than buying directly from China.. Nope!
This random switching-off issue was patched a few months ago with a firmware update for some Tuya manufacturers. But you need a Tuya Zigbee hub for the firmware update. An alternative way to upgrade the firmware is via Zigbe2MQTT OTA upgrade system. But all this is a lot of trouble if you can - return these plugs to the seller.
I'm not 100 % on how I actually viewed the firmware version, as the 2nd plug was installed post your driver install.
The 2nd plug does not show the firmware version, unlike the first did as per my initial screenshot.
I guess I could swap the driver to another to see if that shows up again as standard zigbee outlet or whatever it was a hat I had installed at the time.
Unless you have another suggestion?
Its difficult to say whether or not this problem is present in the 2nr plug, without waiting x amount of time to wait and see.
The 'tv' one was initially installed before you helpfully replied and as such had a few different drivers installed one by one when I was trying to get it working.
Odd that the software side now definitely looks different. I wonder if its worth starting over with the first, which has odd child devices too.
Edit
The kettle hasn't been touched. But it has switched itself off at 5pm today....despite not being used.
247 V is very close to the maximum voltage limit (250V), that Tuya engineers have decided is dangerously high and in order to 'protect' us, their firmware switches off the plug (!!!)
This automatic switching off does not depend on the driver or on the home automation hub. It happens with Tuya's own Zigbee gateway also, it happens even if the device is working offline and not paired to any hub.
The problem is observed with specific chipset only, which Tuya manufacturers started to use in their devices about a year ago.
You can delete the first device and then pair it again to get rid of the component devices and the artifacts left from the other drivers that you have experimented with, but this will not solve the switching-off issue. The only solution is to update the firmware to the latest version. If you know someone with a Tuya gateway, you can pair the two plugs temporarily to their gateway, update the firmware and then pair it again to HE. Or ask the seller if they can do this upgrade for you?
I'm asking amazon, contacted the seller through amazon. I'm guessing that if I plan on getting a few of these, then it may be better and less hassle to purchase a hub?
I can get one for about a tenner.
You seem to know a lot about this - would you be confident that if I buy a hub, the upgrade would sort this out?
My issue is that the kettle hadn't been used for hours. Thus, the spike didn't cause the physical switch off.
Hi guys,
I've purchased two of these Zigbee plugs in July 2022.
It did state that "all issues have been resolved with new firmware" at time of purchase.
I've not experienced any issues, but can see that the voltage fluctuates between 235V lowest up to 245V max.
I was going to purchase a few more as these are the cheapeast zigbee plugs with energy monitoring, will keep an eye on them before I purchase anymore. Thanks
Apparently this is a dead end. I've started a return.
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Hello Darren,
we are still waiting for new stock to come in probably 6 to 8 weeks.
Once we have new stock we will update the title of the plugs so you will know its a new stock.
In the meantime please create a return via Amazon for a refund.
Once again we are very sorry for inconvenience caused.
Kind regards
Ajax Online Team
Can anyone please link me to a uk-based zigbee energy-monitoring plug, which works? Cheers!
