Ubisys C4 Compatibility

Control Unit · switch Zigbee

Ubisys C4 — Control Unit

The Ubisys C4 (Control Unit) is a Zigbee switch / relay from Ubisys. It controls a connected load or circuit, letting you automate lighting and powered devices from your smart-home hub. It's confirmed working across 3 platforms, including ZHA (Home Assistant), Zigbee2MQTT, deCONZ. Because it speaks standard Zigbee, the Ubisys C4 pairs with any Zigbee coordinator once it's joined to one of the supported bridges above.

Compatibility at a glance

Ubisys C4 is a Zigbee switch from Ubisys. It is compatible with: ZHA (Home Assistant), Zigbee2MQTT, deCONZ.

ZHA (Home Assistant)✓ Supported
Zigbee2MQTT✓ Supported
deCONZ✓ Supported
Zigbee2Tasmota✗ Not supported
ioBroker✗ Not supported
Zigbee for Domoticz✗ Not supported
iHost✗ Not supported

Where to buy the Ubisys C4

The Ubisys C4 is widely available on Amazon in the US, UK, Canada and across Europe. Prices and stock vary by region — the link below opens results for your local Amazon store.

⚡ Check your region: in-wall devices follow local wiring standards — pick the version sold for your country (US/UK/EU).

🔎 Find the Ubisys C4 on Amazon →

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Recommended Zigbee coordinators

The Ubisys C4 needs a Zigbee coordinator (USB stick) to join your network. These are the ones we'd buy:

🟢SONOFF Zigbee 3.0 USB Dongle PlusMost popular all-rounder — works with ZHA, Zigbee2MQTT & moreView on Amazon →Also on AliExpress →
🏠Home Assistant Connect ZBT-1Official Home Assistant coordinator (formerly SkyConnect)View on Amazon →Also on AliExpress →
🔵ConBee IIRock-solid choice for deCONZ / Phoscon setupsView on Amazon →

As an Amazon Associate, WillItPair earns from qualifying purchases. This doesn't affect what you pay.

Frequently asked questions

Does the Ubisys C4 work with Home Assistant?

Yes. The Ubisys C4 is supported in Home Assistant — natively through the ZHA integration. It also works through Zigbee2MQTT.

Is the Ubisys C4 compatible with Zigbee2MQTT?

Yes, the Ubisys C4 is supported by Zigbee2MQTT.

What Zigbee hub do I need for the Ubisys C4?

Any Zigbee coordinator paired with one of the supported bridges (ZHA (Home Assistant), Zigbee2MQTT, deCONZ) will let you use this device. A SONOFF Zigbee dongle or a ConBee II are common choices.