Aqara Smart Switch Comparison: D1 vs H1 vs Z1 Pro vs H2

The number printed on the face is not always the number of switched circuits. A multi-button model can combine physical relay channels with programmable wireless buttons. That is useful for scenes and curtains, but it must not be mistaken for extra wired outputs.

D1, H1 and Z1 Pro are established 86 mm square families commonly used in Singapore projects. H2 is a newer vertical-format family with variants that combine relay buttons and programmable controls. Confirm the exact local SKU because global H2 products also include a separate dimmer; the relay Light Switch H2 and Dimmer Switch H2 are not interchangeable.

D1 is the direct choice when the job is to replace a normal wall switch with a physical on/off relay and familiar full-size rockers. Single-, double- and triple-rocker variants cover the common one-, two- and three-load positions. The 86 mm square footprint suits the box format found in many Singapore homes.

The switch remains usable from the wall even if the internet or hub is unavailable. With an Aqara hub, the circuit can also be controlled from Aqara Home, included in schedules and automations, or exposed to a supported household platform. A wireless Aqara control can provide a logical second switching position without adding another switched cable run.

D1 is less suitable when the design calls for a premium metal-backed panel, a dedicated slider, several programmable actions at one position or native Thread. It is deliberately simple, which is often an advantage in bedrooms, service spaces and projects with many repeated circuits.

H1 keeps the same basic relay-switch job but changes the physical experience. Its short-travel rockers and metal frame feel firmer, and neutral and no-neutral versions allow it to cover both renovation wiring and many retrofit situations. Single-, double- and triple-rocker models are available locally.

Supported H1 variants can decouple a button from its relay. The relay can remain energised while the button becomes a wireless control for a smart light, curtain or scene. This is useful, but it changes the expected relationship between pressing a rocker and switching the connected load. Label and document decoupled controls so future occupants and electricians understand them.

With-neutral H1 variants add functions that no-neutral electronics cannot always provide, including power monitoring and Zigbee routing on supported models. The no-neutral version remains valuable where no neutral reaches the box, but it should be chosen for that constraint rather than treated as technically identical.

Z1 Pro adds a touch strip down the left side of the panel. The strip can adjust supported lighting brightness or colour temperature and can control curtains; its buttons also recognise configurable single press, double press and press-and-hold actions. One wall position can therefore operate connected relay loads and additional devices or scenes.

Its adaptive design supports installation with or without a neutral on the applicable local variants. Aqara's MARS-Tech mode is intended to keep compatible Aqara smart lights powered and logically synchronised instead of cutting their supply whenever the wall control is used. That is a more specialised control architecture than a conventional relay switching an ordinary lamp.

The extra functions need a control schedule. Decide what the slider and each gesture does in every room; avoid giving identical-looking buttons unrelated meanings without labels or handover notes. For a simple storeroom light, the Z1 Pro is unnecessary. For a living area with tunable lighting, curtains and evening scenes, it can replace several separate controls.

The Light Switch H2 uses a vertical wall-plate format and offers variants in which the button count can exceed the relay-channel count. That lets one position switch wired loads while spare buttons operate scenes or other devices. It can be a clean solution where the wall-box format and interior language are already designed around vertical devices.

Supported H2 variants can use Zigbee or Thread. Zigbee mode keeps Aqara-specific configuration and local hub automations inside Aqara Home. Thread mode is intended for Matter-based commissioning through a compatible Matter controller and Thread border router. The functions visible in a household platform may not match every Aqara-specific option available in Zigbee mode.

Do not confuse Light Switch H2 with Dimmer Switch H2. A relay model switches a circuit on or off; a dimmer electronically changes output to a compatible dimmable load. The load schedule must state which behaviour is required before the product is ordered.

A switch with neutral receives a permanent live and neutral supply in the wall box. A no-neutral smart switch powers its electronics through the connected load while off. That engineering difference affects supported loads, power monitoring, mesh-router behaviour and sometimes the lowest stable LED load.

Do not infer the wiring from building age, plate colour or a photograph of conductors. A qualified electrician should isolate and test the circuit, then identify live, load, neutral and any multi-way conductors. During renovation, providing neutral and adequate box depth at every smart-switch position preserves the widest product choice.

Z1 Pro and some H2 products reduce the need to choose separate neutral and no-neutral stock, but they do not make the physical wiring irrelevant. Terminal layout, load rating and configuration still depend on the installed circuit.

D1, H1, Z1 Pro and Light Switch H2 are primarily relay-control choices. A relay supplies or removes full mains power. It does not turn an ordinary non-dimmable lamp into a dimmable one, and repeated hard power cuts can make a smart bulb unavailable to apps and automations.

For a conventional lighting circuit, use a relay switch with lamps designed for direct mains switching. For phase-dimmable fittings, use a compatible dimmer and confirm minimum load, dimming method and driver behaviour. For smart lights that need continuous power, use a supported decoupled or smart-light mode and retain an understandable physical fallback.

Mixed systems are valid when documented. A relay can control ordinary service lights while a spare wireless button runs a tunable-light scene. The important point is that every button, channel and light driver has an explicit role.

This schedule is more useful than a room-by-room shopping list. It lets the homeowner, designer and electrician catch a three-load position paired with a two-channel product, a dimmable circuit paired with a relay, or a no-neutral box paired with the wrong variant before installation day.

• Record the room, wall position and wall-box format.
• Name every connected load and whether it needs on/off switching or dimming.
• Record neutral availability, box depth and maximum load.
• Separate relay channels from programmable buttons.
• State whether any button will be decoupled from its relay.
• Define secondary actions such as curtains, scenes and multi-way controls.
• Choose one consistent family or document deliberate exceptions.