Aqara US H2 in ZHA - Trying to write a custom quirk?

[jrfigura]

you can always try to ask claude.ai to help you with custom quirk. It did a pretty decent job on creating a custom quirk for my Aqara H1:

Custom ZHA Quirks: Aqara H1 EU + Sonoff ZBM5 — Decoupled/Detach Relay Mode

Two custom quirks that add decoupled/detach relay mode to the Aqara Smart Wall Switch H1 EU (lumi.switch.l2aeu1) and Sonoff ZBM5 series (1/2/3-gang) in ZHA. Both tested on HA 2026.3.1. The Problem If you have smart bulbs (Philips Hue, IKEA, etc.) wired to an in-wall switch, you know the issue: toggling the switch cuts power to the bulb, making it unavailable in ZHA/Z2M and breaking automations. The solution is decoupled/detach relay mode — the button fires Zigbee events without toggling the rel…