Whoops! Apparently I bought the wifi version. I will return and get teh zigbee version. Thanks.
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okay, i have a new tuya zigbee wall switch. it’s actuall branded “jerry martin”, but anyway. it’s a simple single relay switch. but, it has two endpoints for some reason. what on earth is the F2 thing? can you clarify further?
Tuya have decided to use the F2 cluster to expose 'Green Power' capabilities that I am not familiar with. It is of no use with HE...
Have you tried the inbuilt 'Generic Zigbee Switch' driver?
i managed to get it all working using the generic zigbee switch driver. it’s just odd (annoying) that it doesn’t come in this way by default when joining. it comes in as a multi endpoint device. quite odd. even more odd is i found a tuya driver that lets me reverse the led indicator. but that’s a fail, since this is a neutral not required device, if you turn the led on when the switch is off, each time it repeats a signal, the lights connected to the switch flash. this is due to how current is always drawn to maintain the radio. when you add the minimal amount of current from the led, it’s just enough to make the light connected to the circuit flicker when the radio repeats a signal. i’m sure someone might get a kick out of knowing this.
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Subject - Power outage effect on these relays.
I have the 1 Ch, 2 Ch, and 4 Ch versions of this relay.
I have the 1 Ch on a 12V DC power source that cuts off every night and back on every morning. That thing has NEVER to my knowledge not rejoined the Zigbee mesh and been a transparent joy/workhorse for my use case.
However, I "think" both the 2 Ch and 4 Ch versions of this have given me some rejoining headaches in their configurations on low budget solar power (where occasionally the sky isn't blue, the panel isn't big enough, and the battery is on it's last leg).
Anyone else have these on an inconsistent DC source and noticed that the 2 and 4 Ch versions don't necessarily come back onto the mesh without prompting?
Maybe it has something to do with some messy behavior in a dwindling voltage situation with the solar case (where I drop down to 11.5v DC before the solar controller cuts the load). Whereas I have the 1 Ch version in a stable 12v DC on/off (mains powered) setup.
Thanks in advance for your comments.
I have this same model 1 and 2 channel versions but connected to a 12V SMPS power supply (Stable supply with UPS).
Are you still facing issue with "Mesh Rejoining" ?
I can try with a bench power supply (with variable power supply) and test it if you need it.
Just saw this thread and was excited to try out the 4 channel version. While on Amazon I saw that it can be had in a nice case that makes all the buttons available (and labels them) for just a buck or two more. If you want a 120V powered one it is available now, but I wanted a USB plugged one and that is a long lead - but also comes with a little RF remote.
https://www.amazon.com/MHCOZY-Adjustable-Self-Lock-Momentary-Interlock/dp/B0B1D5KQ16
EDIT - found it from a reputable EBAY seller in the US for even less, and it had a 5% off code on the page... Wound up being $21ish total. Should have one with the case next week.
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Take careful notes on the behavior of that one, I have used the 1 Ch ones with absolutely no issues, INCLUDING nightly powering off on the remoted 12v DC circuit going out to it and other stuff (so it goes off the mesh).
BUT I have suspected the 2 Ch & 4 Ch don't behave as well, certainly not on solar power that often doesn't make it through the night. So this very well could be my poor power implementation and not the device.
Just the same, be mindful of the 2 Ch or 4 Ch device not coming back onto the mesh without some manual intervention. And....be on the lookout for a possible inundation of Zigbee traffic that provokes wonky behavior with other proximal devices on your mesh.
(Disclaimer: I may be off base here as I was installing another device at the time I was encountering a collection of Zigbee-ish issues...it was a power monitoring outlet favorite in Hubitat-land ....and since I don't have the 2 Ch relay running holiday lighting now that outlet has been rock solid 
)
I use the 2 channel to control 2 garage doors and a 4 channel to run a variable speed pool pump and both have been rock solid. The 4 channel gave me a problem immediately after installing but turned out to be defective and the replacement has been working fine.
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Good to know. Can you recall what exactly that behavior was. Some of this stuff "in concert" can be a nightmare to identify as "the source" of a problem.
It began to fail as in not following a command to turn on and off and then just died.
The replacement and the 2 channel work flawlessly.
The 4 channel is mounted outside and I use 3 channels to select different rpm's.
Very nice setup.
I finally got the version with the case I mentioned a few posts up. Paired easily and once switching to the right device type in HE the 4 child devices were available. Just hooked to my laptop's USB port for testing, and it is just fine.
I didn't see this mentioned and was initially concerned since all switches were momentary when paired. Even though the manual doesn't document it - pressing the "Mode Switch" button changes it from momentary to latching. You have to set all latching or all momentary, no mixing, but I guess that is fine.
Very responsive, and looking forward to using this as a replacement to a Konnected board connected to a 5V 4-channel relay.
I have a 4-channel, and it has worked perfectly since I got it (about a year) for what it's worth.
Just coming back to say....
I upgraded a solar panel offering more juice to devices AND battery. After a day of wondering "what the hell happened to the Zigbee mesh after bringing that 4ch online" (with a battery going out on a nearby contact switch to further confuse things) everything seems to HAVE settled down to a level of reliability & compatibility that I've experienced with the 1ch MHCOZY.
Now it's yet to be seen if I end up with some relay problems as recently reported on these. Out of caution I am going to revised how I will use the 4ch i.e. TWO relays will have to be engaged to get an actuator to function and "fail-closed" will be the goal.
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