Answering my own question: Yes, you can use the Ikuu Zigbee hub via Home Assistant.
The setup below will give you BOTH local control and Cloud connectivity at the same time with the standard hardware.
This gives full local control AND cloud control of your devices at the same time.
No device hacks, firmware flashes or custom gateways needed.
I wrote the guide here:
Ok, there are a few questions going on here, so I’ll try and break it down for you.
What I am looking for is a multi-gang set of switches that can also do dimming, but I am assuming that cannot be programmed afterwards?
Unfortunately Mercator do not have a multi-gang dimmer wall plate.
They do a 1-gang dimmer plate, and up to 6-gang switch plates, but not a 6-gang dimmer plate.
However, you can create your own by using Ikuu Dimmer Mechs.
You can fit up to 4 mechs on a standard wall plate.
These give you excellent flexibility to smarten up a single switch point, but keep the look and feel of a dumb switch.
If I go and buy a four gang switch, can I use HA to program different responses to button presses? ie, a press and hold, a double press, etc.?
Sort-of, but with a few caveats.
User Experiences:
I personally prefer the switch or dimmer mechs in most cases, but…
The multi-gang wall plates are great if:
Hope this helps
Does anyone know if these ikuu zigbee rotary dimmers work with the phillips hue hub?
Hi There,
New to home automation and coming to grips with things. I started out with some tuya devices but now see that zigbee seems better due to no cloud involvement etc (had my first run-in with the developer account timing-out thing).
As I understand it, zigbee has three levels of device: hub, router and client.
Are these IKUU devices Zigbee routers? I have a very long and narrow house and the easiest place for me to put the zigbee hub is more or less at one end of the house. I will need a good spread of repeaters/routers to get good coverage for battery powered sensors etc - which I gather are just clients, not routers.
TIA
Tuya is the OEM manufacturer for several hundred white-label suppliers. They produce both Zigbee and WiFi devices.
Mercator Ikuu is one of those white-labelling suppliers. Mercator is a big Australian vendor who make a bunch of Australian-certified electrical products.
They sell both Tuya Zigbee and WiFi products under the “Ikuu” brand range.
You can generally buy the exact same Tuya-powered hardward devices from AliExpress, but the advantage of using Mercator Ikuu or Arlec GridConnect or Deta products from Bunnings are that they are Australian-Certified electrical products. Deploying anything else to your 240V household power circuit is illegal.
Are these IKUU devices Zigbee routers?
Repeaters: Some yes, some no. Generally the hard-wired devices are repeaters and clients, and the battery devices are just end-clients.
E.g. Light bulbs and switches are repeaters. Battery-powered Climate and Motion Sensors are not.
I started out with some tuya devices but now see that zigbee seems better due to no cloud involvement etc
Tuya Zigbee and WiFi devices do not /NEED/ cloud connectivity, but it does make the configuration easier.
Have a look at this excellent fork of Local Tuya.
This fork provides local connectivity to Tuya WiFi devices and (importantly!) support for local connectivity to Zigbee sub-devices behind a hub.
The bonus here is that it also provides dual-control via BOTH the Tuya Smartlife app and locally via Home Assistant at the same time, if that’s something that you want.
Unfortunately the switches are not repeaters. See here:
Link
Don’t regard this list as exhaustive. I would assume no switches are repeaters but e.g.the powerpoints are.
I have a number of these gpo’s. Whilst the internal ones have worked perfectly, I have found the external ones freeze to external input (ie. The switch on the device itself becomes non responsive on occasion). I’ve had this happen in two separate switches. A power cycle of the switch (off/on at the circuit is required) Mercator have offered warranty replacements but won’t tell me if the hardware or firmware will be different. Given this, I’m unwilling to put the same device in in replacement (of two devices).
Not sure if others have experienced this.
I agree, but have found the build quality of the local devices better. For example the screw terminals for the Deta switches are big enough for multiple wires. I originally had various AliExpress Wifi switches but have slowly replaced them all with the Deta switches (using Cloudcutter to make them local again). I am testing a zigbee Ikuu rotary dimmer as prefer to holding a button to go up and down brightness. So far so good but do find it slow to turn on both from the switch and via HA.
Hi Guys, i am based in Melbourne and I’m considering to change all the light switches across the house. I cant decide whether i should go down the path of putting shelly pucks with momentary switch or install smart switch like the ikuu. We have 1x 3way switch, 1x 4way switch and 2x 2way switch which complicates things a bit. Any recommendations if redoing all the switches? Currently we just have the clipsal c2000
I ended up going Shelly because it was going to be significantly cheaper than using the Ikuu range. We got 17 all up, and 3 of them are for 2 way switches (there’s multiple places to turn the lights on and off for a single room)
One thing with Shelly relays is the way they’re set up, for a 2 way switch, you only need 1 relay, not 2! So having the 2 way switches won’t complicate things from the Shelly point of view. That said, we’ve got a lounge area that’s quite large that we’ve sort of split it with one end being for the TV stuff and one end where I have my desk, all open plan, and two of the 2 way switches being for this area (so we can turn on either light from either end of the room). So one panel has 2 switches, which is for the lounge and office area, and the other panel has 3 - one for the hallway, lounge and office. When the electricians were installing the Shellys into there, they said they wouldn’t be able to fit 3 into there without making a mess, so decided to put 2 Shellys where the 3 gang is and 1 Shelly where the 2 gang is. From an end user it makes no difference, but just something to keep in mind
So are you saying we only need 1 for the 4way switching. Did you also change the buttons to momentary or keep the traditional ones.
I’m thinking for a 2 gang switch plate i would need $40 for the shelly and ~$20 for each of the push button and then cost for electrician, vs ikuu panel which might be easier to swap out and cost about $60 for the panel?
Also i have a couple of 6 and 5 gang wall plates so from your experience it might be harder to get 3 shelly behind them
Sorry, I missed the 3 and 4 way switch part in your original message - must have been too early in the morning for that!
So when you say 3 and 4 way switches, you mean that one light group has 3 or 4 different switches that you can turn on/off independently of each other? If so, as far as I can tell, one Shelly should be enough for it, but it might be worth seeing if you can confirm just to be 100% sure before getting the electrician out.
We decided to keep the traditional buttons, which helped reduce the cost even further. For the 5/6 gang wall plates, I’m not an electrician and have no idea how it works but maybe it might be best seeing what the electrician says? Just because it might have been a tight fit for us might not mean it’s a tight fit for everyone - maybe you’ve got more space there or something?
As for the cost, we ended up getting them for about $14 each (we just got the basic one, no dimming or anything fancy). We were already getting the electrician to do work for us so don’t have a specific price per unit installed, but we originally thought we wanted a Shelly on every light and got quoted for that, but then decided we didn’t want it on one particular light and got requoted for one unit less. The difference was ~$20, so we assume each one cost about $20 to install, but again your mileage may vary depending on other factors.
Yes that’s right, we have 2 of those light groups one with 4 switches and the other with 3 in different locations across the house.
We have a new house so not sure if there are any rules for such things. Im thinking I’ll try one of each in the bathrooms as its 2 gang.
It seems like it doesn’t matter so much which way i proceed if cost is not a problem.
I was hoping incase anyone had any advice advocating either of the option or strongly opposing.
Hey people who’ve used the rotary dimmers, is it possible to toggle them between dimming electrically and dimming via zigbee?
I want to install two, one to control dimmable downlights directly and another to control Hue bulbs wirelessly. The documentation on these is really sparse.
I tried the Ikuu Zigbee IP54 weatherproof outdoor double power point with a variable speed pool pump (speck eco pro) and it was causing the pool pump to stop after a few minutes.
The pump works fine with a normal outlet so I think maybe the energy monitoring stuff is causing the issue. I havent tried any other brands of smart outlets yet.
Anyone got the single gang Dimmer working. The ID is this: TZE200_swaamsoy
I can pair it with my ZHA controller, and it finds a switch, but:
a) There is no dimmer control
b) The switch control does nothing (won’t turn the light on or off), and doesn’t seem to error in the logs.
It also doesn’t list a quirk at all - not sure if that’s necessary for something that would be in the std repository.
I use the outdoor zigbee switch with my Zodiac eco variable speed pump. No issues at all. Might be something else going on with your setup
Hi, The Mercator Ikuu switches with neutrals ARE repeaters. At least, I can verify that is the case for the 5-gang and 6-gang, and AC fan + light switches.
I’ve also added support for ZHA for the 5-gang and 6-gang light switches here: Support for 5 and 6 gang Mercator Ikuu tuya switches by danielp370 · Pull Request #3218 · zigpy/zha-device-handlers · GitHub
Unfortunately, I’m in the same boat here. I have the same switch, but getting the same issue. I don’t know enough about zigbee and Tuya to do any detailed analysis.
I hope someone knows how to resolve this 
. I don’t like how it doesn’t know the firmware version. I have a feeling that this device is some generic Tuya dimmer switch device which has been modified by Mercator in an annoying way causing issues.
UPDATE!
Looks like it’s been solved here [Device Support Request] Mercator Ikuu 1 button Dimmer (SSWD01) · Issue #1463 · zigpy/zha-device-handlers · GitHub
I think the device type was incorrectly added as on/off switch instead of dimmer switch.
ive been using the ikuu rotary dimmers for a about a month they are slightly slow (i mean 2 seconds to turn on but do work far better than what i had before. My zigbee net work is large and has lots of repeaters.
i cannot work out how to get transition working id love to be able to fade in slowly but it doesn’t respond or like the transition in the json data.
if anyone knows how to get them to fade/tranisiton id love to know 
