The Aqara Dimmer Switch H2 EU (KD-R01D) is a white, offline-capable dimmer switch designed for smart home integration. It supports dual-protocol Thread and Zigbee, with Matter compatibility for future-proof integration with Amazon Alexa, Apple Home, and Google Home. It works with or without a neutral wire, fitting 55 mm modular systems. It offers leading-edge and trailing-edge dimming for incandescent, halogen, dimmable LED, CFL, and ELV bulbs without flicker. In Zigbee mode, it provides adjustable dimming range and gradual transition settings. When used with a neutral wire, it enables