Sinope TH1123ZB Zigbee Thermostat (3000W)

Quick verdict

Most Zigbee thermostats are EU hydronic radiator valves, so this is the one to know about if you heat with North American electric baseboards. It wires into a 240V load (up to 3000W) and joins ZHA or Zigbee2MQTT directly, exposing temperature, mode, load power and keypad lockout locally. A 4000W sibling, the TH1124ZB, exists for larger loads.

Standout: A rare North American 240V line-voltage Zigbee thermostat for electric baseboard and convector heating that pairs locally to ZHA or Zigbee2MQTT - no Sinope hub.

Notes last checked Jun 7, 2026.

Compatibility snapshot

Why it stands out

• Local control over ZHA or Zigbee2MQTT with no Sinope GT130 hub or Neviweb cloud
• Purpose-built for 240V electric baseboard/convector loads up to 3000W (1500W at 120V)
• Exposes useful entities: local temperature, mode, load power, backlight, keypad lockout

Reasons to hesitate

• Demand-response (Hilo) and geofencing still require the GT130 hub + Neviweb cloud
• Hardwired line-voltage install; no low-voltage HVAC or floor-heat support
• No native Matter or Thread

Best for

• North American homes with electric baseboard/convector heat wanting local Zigbee control
• Privacy-focused users avoiding the Neviweb cloud

Avoid if

• You have a low-voltage (24V) HVAC system - this is line-voltage only
• You are not comfortable wiring a 240V load and cannot hire an electrician

Privacy and local-control notes

On ZHA or Zigbee2MQTT it runs fully local with no Sinope hub or Neviweb cloud. The GT130 hub + Neviweb are only needed for Sinope's own app, geofencing and Hilo demand-response.

Home Assistant support: supported · integration path: ZHA or Zigbee2MQTT (local).

Buying reality check

Price notes: Around $85-$90 USD. 240V line-voltage wiring - a licensed electrician is recommended.

Compare side by side: see thermostat comparisons →