Relays & dimmer modules that work with Home Assistant

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter supported
• BT supported
• not supported

The default cheap HA relay: tiny enough for cramped UK back boxes and rock-solid on the local Shelly integration. Needs a neutral wire, so check your back box before ordering. Deciding between this and the 1PM Mini Gen3 already on the site? Buy the 1PM if you want wattage or an Energy-dashboard entry; buy this one when you just need a dumb on/off relay a few pounds cheaper. Gen3 firmware also gives it native Matter support, so it can join Apple Home or Google Home directly without the Shelly integration. Unlike the Zigbee-only Shelly Wave line, this Gen3 Wi-Fi version isn't Works-with-Home-Assistant certified, though the native integration works identically well.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter supported
• BT supported
• not supported

Worth the extra pound over the plain 1 Mini for built-in power monitoring — energy sensors appear automatically in HA. Requires neutral, like the whole Mini series. At 29×34×16mm it squeezes behind a UK single socket where a full-size relay won't fit, and the 8A/2000W rating covers most single lighting circuits without derating. At £14.49 it costs roughly £2 more than SONOFF's Zigbee ZBMINIR2, which also has power monitoring in a similar footprint — the real choice isn't price, it's protocol: WiFi means one more device polling your router and going dark in a broadband outage, where Zigbee joins the mesh and keeps working locally regardless. Gen3 firmware also gives it native Matter support (firmware 1.6.0 or newer), so it can join Apple Home, Google Home or Alexa directly without the Shelly app or HA — but Matter only exposes it as a basic on/off switch, so joining that way forfeits the power, voltage, current and energy sensors that are this SKU's whole reason for existing over the plain 1 Mini.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter not supported
• BT supported
• not supported

Not a relay at all — this is an input-only module with 4 dry-contact terminals for turning an existing wall switch or push-button into an HA scene trigger, without ever switching mains load itself. Handy behind a bank of unused gang-switch positions, or for wiring in a doorbell push as an automation trigger. It still needs mains L+N to power itself even though it isn't switching anything. At 37×42×16mm and 19g it hides behind a standard UK backbox, with idle draw under 1W. Being mains-powered rather than battery, it makes a solid always-on BLE proxy: Bluetooth 4.2 lets it relay nearby Shelly BLU buttons and sensors into HA without a dedicated gateway.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter not supported
• BT supported
• not supported

The odd-jobs module: two low-voltage inputs and two potential-free relay outputs (30V, 300mA max) for wiring into garage door openers, boiler interlocks, doorbell chimes, underfloor heating actuators, or any low-voltage circuit a mains relay can't touch. Don't mistake this for a parasitically-powered add-on — at 40 x 21 x 7mm it's tiny enough to tuck inside a garage opener's housing, but it still needs its own 8-24V AC/9-28V DC (or 5V DC) supply wired in separately from whatever low-voltage circuit it's monitoring or switching. Fully local via HA's core Shelly integration — the one to keep in a drawer for whatever project comes next.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter supported
• BT supported
• not supported

Two 16A channels with per-channel power metering, and it doubles as HA's best-value roller-shutter/blind controller in cover mode. Needs a neutral, but at just 37 x 42 x 16mm it's slim enough for almost any UK back box without depth headaches. At 16A per channel it'll switch an immersion heater or shower pump as easily as two lighting circuits, and cover mode adds calibrated position tracking without a separate blind controller. It isn't in Home Assistant's formal Works with Home Assistant scheme, but the native Shelly integration is Platinum-quality local push — a better bet than its bolt-on Matter-over-Wi-Fi support, which exposes on/off only and drops power metering and calibration.

• Zigbee not supported
• Z-Wave supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

A no-frills Z-Wave Plus (EU 868MHz) relay with power metering for a single on/off load — think an outbuilding light or an extractor fan you want on HA without a dimmer curve to worry about. At 42.5 x 38.3 x 20.3mm it's small enough for almost any UK back box, but it's still a 3-wire install, so it needs a neutral. Being mains-powered and Z-Wave Plus, it also acts as a mesh repeater, strengthening range for battery devices elsewhere in the house. Stock has gone patchy: Vesternet showed it unavailable at last check, so buy from Amazon UK or EasyGates Direct if you see it in stock rather than waiting on Vesternet.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter supported
• BT supported
• not supported

Shelly's dedicated answer to the classic UK no-neutral lighting circuit: a live-only single relay, with the bypass capacitor built in so LED loads under 5W stay happy. Same fully-local Shelly integration as the rest of the range — no compromise on control quality just because your back box lacks a neutral. At £26.24 it's roughly double SONOFF's ZBMINIL2 (£13.99) — pay the premium if you want Wi-Fi's simpler pairing and Shelly's polished app/HA integration over Zigbee's better mesh scaling and lower per-device draw. At 37x42x16mm it's tight enough for most UK back boxes, but measure depth first if yours is already crowded with cabling.

• Zigbee supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter supported
• BT supported
• not supported

The current-generation 2-channel Shelly, and the multi-protocol radio is the headline: WiFi 6, Zigbee (with repeater capability), Bluetooth and Matter all in one module, so it can join a Zigbee mesh as a router even while you drive it over WiFi via the native Shelly integration. Two 10A channels (16A combined, 18A peak) with per-channel metering and cover mode for blinds. Supersedes the older Shelly Plus 2PM, which is now legacy stock — buy this instead unless you find the Plus 2PM heavily discounted. Needs a neutral; Shelly hasn't published a no-neutral spec for this generation, so don't assume it'll run a no-neutral UK lighting loop without checking first.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter supported
• BT supported
• not supported

The go-to Wi-Fi dimmer for UK no-neutral lighting circuits — it works without a neutral wire, though you'll need the Shelly bypass for LED loads under 20W. Trailing-edge only, with power metering, fully local in HA, and slim enough at 16.5mm deep to fit almost any UK back box — unlike the Fibaro Dimmer 2, which needs a 60mm-deep pattress. At £28.99 it's roughly half the Fibaro's £53-55, trading Z-Wave's mesh range and physical scene-controller input for Wi-Fi's simpler setup and Matter support. The 200W ceiling comfortably covers a multi-bulb pendant or downlight circuit, and since dimming happens on-device, HA brightness changes land instantly with no cloud round-trip.

• Zigbee not supported
• Z-Wave supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

The veteran premium pick: a Z-Wave (EU 868MHz) dimmer that auto-calibrates to the load, works on UK 2-wire no-neutral circuits (bypass needed below 25W), and is rock-solid under Z-Wave JS. It needs a deeper back box than most modules — Fibaro specs a 60mm minimum depth, so measure before buying if your pattress is a shallow 16mm or 25mm can. At around £53-55 it costs more than Candeo's Zigbee dimmer module (£39.99), trading Zigbee's simpler mesh setup for Z-Wave's stronger through-wall range and a genuine second scene-controller input Zigbee modules don't offer. Stock has been patchy — Vesternet has shown it backordered before — buy when you see it.

• Zigbee not supported
• Z-Wave supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

This is the module, not the motor — it fits behind an existing switch and drives the up/down/stop wiring of a mains AC blind, awning, or gate motor you already have, giving precise slat/position control and power metering under Z-Wave JS. It needs a neutral and works best in a 65mm-deep back box (a 45mm box is workable but tight). Worth knowing before you buy: there's a long-running Home Assistant Community thread on quirky zwave_js behaviour (duplicate cover/switch entities, slider lag) across firmware versions, so budget time for calibration and re-interview if you hit odd states.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter not supported
• BT supported
• not supported

The one to reach for once you outgrow back-box modules: 4 independently metered 16A channels (40A combined) on a DIN-rail unit built for the consumer unit, not behind a switch. That makes it the practical choice for a garage door, an immersion heater, or four zones of a boiler/valve setup on one device. It ships in its own black plastic enclosure — no separate housing to source — at roughly 96×53×59mm, eating about six standard 17.5mm DIN modules of rail space. Needs a neutral at each channel and isn't works-with-HA certified (only Shelly's Z-Wave Wave range carries that badge) — but the native local Shelly integration is rock-solid.

• Zigbee supported
• Z-Wave not supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

The neutral-wire sibling of the ZBMINIL2: 10A, acts as a Zigbee router that strengthens your mesh, and adds detach mode and turbo antenna mode in Zigbee2MQTT. If your back box has a neutral, buy this over the L2 every time. It shares its tiny 39.5x33x16.8mm shell with the WiFi-only MINIR4, so both fit the same shallow UK back boxes — but pick this one over the MINIR4 unless it's a single-switch, WiFi-only job: Zigbee adds a mesh-strengthening router instead of another WiFi device, skips reliance on a third-party HACS integration, and keeps working locally if broadband drops. MINIR4 only wins on unit price if you have no Zigbee coordinator yet.

• Zigbee supported
• Z-Wave not supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

Buy this only if your back box genuinely has no neutral wire — if it does, get the ZBMINIR2 sibling instead: similar price, 10A instead of 6A, and it works as a Zigbee router rather than an end device, which does more for mesh coverage. Like any no-neutral relay, it bleeds a trickle of current through the load to stay powered, so some dimmable LED drivers flicker or won't fully switch off; SONOFF rates it down to 3W with no bypass capacitor required, but cheap dimmable bulbs are still worth testing first. At roughly £14, it's the going rate for a no-neutral Zigbee relay.

• Zigbee supported
• Z-Wave not supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

A polished no-neutral Zigbee relay (model SSM-U02) that pairs directly with Zigbee2MQTT or ZHA — no Aqara hub needed, despite what the box says. It costs noticeably more than SONOFF's no-neutral equivalent (the ZBMINI-L2, roughly half the price), but the extra spend buys tidier build quality and reliable power-failure memory. Like all capacitor-based no-neutral relays, it borrows a trickle of current through the load to stay powered — fine for standard bulbs, but dimmable LED drivers can flicker or hum faintly at low brightness, so it's best matched to simple on/off lighting circuits rather than dimming setups. A with-neutral SSM-U01 sibling adds energy monitoring if that matters.

• Zigbee supported
• Z-Wave not supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

A 2-gang Zigbee 3.0 relay (model LLKZMK12LM) with per-relay dry-contact mode, which is the detail that matters: it can pulse-switch a garage door opener or a boiler/valve circuit instead of just holding a load on/off, and both relays are independently exposed in Zigbee2MQTT and ZHA. The catch is the combined 10A rating across both channels — fine for lighting or a boiler relay, not enough for anything like a washing machine circuit. Requires a neutral wire; Aqara markets it as needing their own hub, but it's standard Zigbee 3.0 and pairs directly to Zigbee2MQTT or ZHA with no Aqara hub needed.

• Zigbee supported
• Z-Wave not supported
• Wi-Fi not supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

A UK brand that actually designs for UK wiring: works with or without a neutral and fits standard 25mm back boxes. Fully supported in Zigbee2MQTT with all features exposed, making it the best Zigbee dimmer module for typical UK no-neutral lighting loops. At £39.99 it's priced in line with Samotech's SM309-S, the other serious UK no-neutral trailing-edge option — Aqara's modules only switch, they don't dim, so they're not a real alternative here. Trailing-edge dimming handles LED loads up to 200W and halogen/incandescent up to 400W cleanly, without the buzz cheap leading-edge drivers cause. Buying direct from a UK company also means UK-based support if a module fails, not an overseas marketplace returns process.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

The cheapest way into behind-switch smarts, but with a maintenance catch: there's no official Home Assistant integration, so you're relying on the community AlexxIT SonoffLAN HACS integration talking to eWeLink's LAN mode rather than anything SONOFF supports directly. Needs a neutral; detach-relay mode keeps a dumb wall switch usable alongside smart bulbs. Against the Zigbee ZBMINIR2 sibling on this site: WiFi needs no separate coordinator to get started, but each unit adds its own network traffic instead of strengthening a mesh like a Zigbee router does. If avoiding the HACS dependency matters more than saving a few pounds, the Matter-native MINIR4M pairs natively with no custom integration required.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

Two independently switched, power-metered relays in one module — genuinely built with curtain and roller-shutter motors in mind, so it doubles as a switch-side controller for an existing AC blind or shutter motor, unlike the Aqara Curtain Driver E1's standalone battery motor with nothing to wire. Each channel handles up to 10A (20A/4400W combined) and needs a neutral wire; the extra relay wiring and motor connections rarely fit a shallow UK single-gang back box, so check depth first. Best HA route is the community SonoffLAN HACS integration over eWeLink LAN mode, fully local once set up.

• Zigbee not supported
• Z-Wave not supported
• Wi-Fi supported
• Thread not supported
• Matter not supported
• BT not supported
• not supported

A DIN-rail 4-gang Wi-Fi relay for consumer-unit-level jobs — four 10A channels with interlock/self-locking modes that suit a garage door, gate motor, or multi-zone valve setup. It's Wi-Fi and 433MHz RF only (there's no Zigbee variant, despite what some listings imply), and stock firmware has no official HA integration: your realistic routes are the AlexxIT SonoffLAN HACS integration over eWeLink LAN mode, or reflashing to Tasmota for a fully local MQTT setup. Supports both live/neutral and dry-contact/no-neutral wiring modes, which is unusually flexible for older UK circuits.