LED downlight flickering when on with Moes no neutral switch

I will start this by acknowledging that this question is not directly related to Hubitat, but my entire home automation experience has been almost all Hubitat and I have found this community very helpful.

So I bought some 1 way Moes no neutral switches: https://www.aliexpress.com/item/1005005178441385.html

They have replaced the old dumb rocker switches and are lighting up single dumb LEDLux 8w LED downlights that were installed prior to my home automation adventure. The LED downlights do not flicker when turned 'off', but their brightness flickers when turned on.

There are plenty of discussions on this and other forums advising the installation of a bypass capacitor in parallel to the load, but this is to solve the issue of flickering when no neutral switches are turned off (but still drawing current). Would installing the capacitor solve the brightness flickering when turned on problem as well?

It could do. Sometimes the bypass is needed if the connected load is too low, it's certainly worth trying.

Are you sure the lights are dimmable? Sometimes non-dimmable bulbs will still dim but have erratic behavior because the hardware driver is not designed to handle it.

Also, it sounds like they may be integrated LEDs? If they are bulbs, try a different brand of bulb. If all bulbs are flickering I would try the bypass, it may help. There are a few people who put them on every dimmer even with neutral and swear it helps. Somewhere on the forums there are instructions on how to make your own.

Several of my Zigbee Moes Tuya switches came with a bypass that I did not need.

It should be installed right at the fixture in parallel.

The aftermarket LEDs in my Avalon flicker when they are set as driving lights. Anti-flicker modules are available, as are anti-flicker bulbs.

Thanks for your suggestions. I tried swapping the flickering dimmable downlights with older non-dimmable ones from other parts of the house and the old ones work great, no flickering. The older ones happen to have a small rectangular box inline on the power lead, perhaps there is a bypass capacitor already installed in them?

With these Moes no-neutral switches, do you hear a clicking sound when you switch them on/off?
I am trying to understand whether there are relays inside, or if they use sold-state triacs.

There is no click, so I am going to say solid state.

Copy and paste as a text here the device model and manufacturer (‘Device Data’ details section at the bottom of the web page).

1 Gang:

  • endpointId: 01
  • application: 50
  • manufacturer: _TZ3000_hhiodade
  • model: TS0011

2 Gang:

  • endpointId: 01
  • application: 50
  • isMultiEP: true
  • manufacturer: _TZ3000_18ejxno0
  • model: TS0012

3 Gang:

  • endpointId: 01
  • application: 50
  • isMultiEP: true
  • manufacturer: _TZ3000_qewo8dlz
  • model: TS0013

PS These would be the US versions of the switches that also fit Australian fixtures

These are three different devices ...
Do they all have a flickering problem when the switches are turned on?

Yes they all flicker.