Candeo
Candeo Zigbee Dimmer Module (C-ZB-DM204)
- Zigbee2MQTT / ZHA
- Local control
- Zigbee
Prices verified September 2026
See more relays & dimmer modules picks on our Amazon storefront →Our verdict
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.
What can Home Assistant control on the Candeo Zigbee Dimmer Module (C-ZB-DM204)?
| Control | Type | What it does |
|---|---|---|
| Light | Toggle + brightness slider | Turn the load on/off and dim it |
| Power / Voltage / Current | Sensor | Live readings |
| Energy | Sensor (kWh) | Cumulative energy used |
| External switch type | Selector (momentary/toggle) | Match the module to your physical switch wiring — needs a power cycle to apply |
Zigbee2MQTT exposes full energy monitoring here, not just on/off — live power, voltage, current and cumulative kWh sensors alongside brightness — so you can catch a dimmed LED load dropping to near-zero wattage mid-session (a failed bulb) with a simple power-threshold automation, something a plain switch can't do. One config gotcha: external_switch_type and minimum_brightness_level are write-once settings that silently do nothing until the module is power-cycled after being changed in Zigbee2MQTT.
Specs
| channels | 1 |
|---|---|
| min load w | 10 |
| dimming curve | trailing_edge |
| max load led w | 200 |
| zigbee version | 3.0 |
| uk back box 25mm | true |
| max load halogen w | 400 |
| no neutral capable | true |
How does the Candeo Zigbee Dimmer Module (C-ZB-DM204) compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Candeo Zigbee Dimmer Module (C-ZB-DM204) (this product) | £39.99 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Dual Relay Module T2 | £29.74 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Single Switch Module T1 (No Neutral) | £26.99 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Fibaro Dimmer 2 (FGD-212) | £53 | Z-Wave | Yes | Native |
Frequently asked questions
- Does the Candeo Zigbee Dimmer Module (C-ZB-DM204) work with Home Assistant locally?
- Yes. The Candeo Zigbee Dimmer Module (C-ZB-DM204) is controlled locally in Home Assistant through Zigbee2MQTT or ZHA, so it keeps working if your internet connection or the Candeo cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Candeo Zigbee Dimmer Module (C-ZB-DM204) use, and do I need a hub?
- The Candeo Zigbee Dimmer Module (C-ZB-DM204) uses Zigbee. To pair it with Home Assistant you need a Zigbee coordinator (for example a SkyConnect/ZBT-1 or Sonoff dongle) attached to your Home Assistant host. Candeo's own hub is not required when you integrate through Zigbee2MQTT or ZHA.
- How much does the Candeo Zigbee Dimmer Module (C-ZB-DM204) cost in the UK?
- The lowest price we have listed for the Candeo Zigbee Dimmer Module (C-ZB-DM204) is £39.99 at Candeo. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.