Use VZM35-SN (On/Off) and AUX switch to control VZM36 (Canopy) with one controlling the fan and on controlling the light?

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1

I have been using the VZM35-SN switch with Zigbee bindings to my VZM46 canopy for a long time with no issues, but I am curious about adding an AUX switch to the same junction box as my VZM35-SN. Currently 2 on the switch in bound to 1 on the canopy so the paddle controls the light, while 3 on the switch is bound to 2 on the canopy so the config button controls the fan. The desired outcome is to have the paddle on the VZM35-SN control the light, and the paddle on the AUX switch control the fan, or vise versa, and take the config buttons out of the equation for now.

I have purchased an AUX switch and wired it up appropriately. Currently, both switches control the canopy in identical ways. I have enabled the AuxSwitchUniqueScenes setting, and I expected to see endpoints 4, 5, and 6 become available within Zigbee2MQTT, but I do not see them. Am I missing something? Thanks!

2

While I have never investigated using this option in the firmware, I am not sure enabling it gets you extra endpoints, but extra trigger actions…

In Home Assistant, for example, you would normally have an “up_single/double/etc”, “down_single/double/etc”, and “config_single/double/etc”, but I think enabling AuxSwitchUniqueScenes adds something like “aux_up_single”, etc

I might be completely mistaken, but that’s how I understood it to operate. If this is the case, you would need to route the fan controls through automations and not through direct bindings, although you could leave the config button on the main switch as a backup

3

Yes, this is the correct way of handling it. The switch does not have any additional endpoints which can be bound directly from the Aux switch alone.

4

Ah. Bummer. In that case, I’m having a hard time figuring out how to bind the canopy via zigbee for the main switch, while not having those same actions be applied for the aux switch. For example, I still want to use zigbee bindings to control the light and fan on the canopy from the main switch, but intend to use home assistant to have the aux switch control the fan. That should be possible, right?

5

I don’t think so. You’d have to disable binding and do it purely with automations / scene control. If you want to do it with binding, you need to use two separate smart switches.

6

I ended up just using two switches in rooms with this desired behavior. Didn’t really matter if the second one was a Dimmer or On/Off as they both had the functionality desired. The canopy is independently powered. Nothing is on the load of either switch. One switch has binding 2 bound to canopy binding 1 so the rocker controls the light. The other has binding 2 bound to canopy binding 2 so the rocker controls the fan.