I installed a Dual Relay Module T2 to which I connected a light bulb. I also installed a Light Switch H2 EU with 4 buttons and 2 channels, and I configured both devices in the Aqara app. I created a local automation through the Panel Hub S1 Plus, where I added both devices as follows: If button 1 on the Light Switch is pressed, then turn channel 2 on/off.
When I physically press button 1 on the switch, there is about a one-second delay before the light bulb turns on.
I created a device group in the Aqara app consisting of switch 2 (the T2 module) and button 1 (the Light Switch), and when I press it, the light turns on instantly without delay.
How can I eliminate the delay when physically pressing the switch?
I mention that I tried to interconnect them directly as follows: In the app → Accessories → Light Switch H2 EU → Quick Two-Way Control → Switch 1 decoupled switch mode (button 1) = no useful device
How can I configure them to work directly between each other, so the command does not pass through the S1 Pro hub, and I can physically turn on the light from the switch without lag?
I also tried changing the light bulb connection on the T2 module from switch 2 to switch 1, as I saw this might solve the problem, but without success.
At the moment, I noticed there is no apparent option in the Aqara ecosystem to enable direct Zigbee binding between the Aqara Relay T1 or T2 and the Aqara H2 Wall Switch.
Could you please clarify the following:
- Is direct Zigbee binding between the H2 wall switch and the T1/T2 relay currently supported in the official Aqara app and hub?
- If not, is this functionality planned for a future firmware or software update?
- When using Aqara devices with a third-party Zigbee coordinator (e.g. Zigbee2MQTT or ZHA in Home Assistant running on Raspberry Pi with a Zigbee USB stick), do the T1/T2 relays and the H2 switch support standard Zigbee binding (e.g. on/off cluster binding)?
- Would such a configuration (direct binding via Zigbee2MQTT or ZHA) eliminate all noticeable delay between pressing the switch and triggering the relay — similar to the behavior of a traditional wired switch?
- Are there any hardware or firmware limitations that would prevent such direct binding from working reliably outside the Aqara ecosystem?
Additionally, could you confirm if Aqara has any recommended Zigbee coordinators or USB sticks that are known to work well with Aqara devices in third-party ecosystems (e.g. CC2652P, EFR32MG21, or others)?
My goal is to build a fully local, real-time responsive system, where pressing a smart switch (like the H2) instantly triggers a relay (like the T1 or T2), without relying on the cloud or experiencing any delay — ideally functioning just like a traditional wired switch.
Thank you in advance for your support and clarification!