Sinopé TH1123ZB

Line-voltage thermostat

A Zigbee 3.0 wall thermostat for electric baseboards, convectors, fan heaters and radiant ceilings up to 3000 W at 240 V. It switches the heater through a triac and reports the heater’s voltage, current, power and energy.

Sinopé TH1123ZB
  • Zigbee

Line-voltage thermostat

Compatibility

Compatible with EpiSensor Edge over Zigbee.

Pair it with the Zigbee radio on an EpiSensor Gateway. Edge reads it locally on the Gateway.

Edge reads 20 values from it, listed under Interface.

Connect it with

Specifications

The minimum load matters as much as the maximum. A baseboard, convector or radiant ceiling must draw at least 2 A (500 W at 240 V), and a fan-forced convector at least 4.16 A (1000 W at 240 V). Only one fan-forced convector can be connected to each thermostat. For a heater above 3000 W at 240 V, Sinopé makes the TH1124ZB, rated to 4000 W.13

Power
Mains. Powered from the heating circuit it controls, so it needs no battery or separate supply.1
Supply voltage
120, 208 or 240 V AC, 60 Hz1
Switching
Triac1
Maximum load
12.5 A: 3000 W at 240 V AC, 1500 W at 120 V AC1
Minimum load, baseboard, convector or radiant ceiling
2 A: 500 W at 240 V AC, 250 W at 120 V AC1
Minimum load, fan-forced convector
4.16 A: 1000 W at 240 V AC, 500 W at 120 V AC1
Load type
Resistive only1
Setpoint range
5 to 30 °C1
Display range
0 to 50 °C1
Resolution
±0.5 °C1
Control accuracy (TH1123ZB-G2)
±0.15 °C on 15-second cycles, ±0.5 °C on long cycles3
Operating temperature
0 to 50 °C1
Storage temperature
-20 to 50 °C1
Wiring
Two-wire or four-wire, non-polarised2
Wireless
Zigbee 3.0, 2.4 GHz, +20 dBm transmit, -108 dBm receive sensitivity, AES-1281
Dimensions (H × W × D)
127 × 85 × 28 mm4
Standard
CSA C828-191
Warranty
3 years1

Where it is used

  • Heating energy room by room in offices, schools and apartment buildings heated by electric baseboards, from each thermostat’s own power and energy readings.

    HVAC energy monitoring for commercial buildings
  • Room temperature and setpoint history, to answer comfort complaints and check heating schedules.

    Indoor environmental monitoring
  • Lowering setpoints across a building for a peak period with the eco mode offset, then restoring them afterwards.

Interface

Readings and settings, with units and ranges where Sinopé publishes them. readable, readable and writable.7

Download
ReadingUnitRange or valuesAccess
Measurements 7
Room temperatureThe temperature the thermostat regulates to. °C - Read only
Heating demandHeating output the thermostat’s control loop is calling for. % 0 to 100 % Read only
Heating stateWhether the output is heating. - idleheat Read only
PowerPower drawn by the heater. W - Read only
VoltageSupply voltage at the thermostat. V - Read only
CurrentCurrent through the heater. A - Read only
EnergyCumulative energy delivered to the heater. kWh - Read only
Controls 3
Occupied setpointTarget temperature while occupied, in 0.5 °C steps. °C 5 to 30 °C Read and write
ModeHeating on or off. - offheat Read and write
Eco mode offsetSetpoint offset for demand response, in 0.5 °C steps. A preset turns it off. °C -10 to 10 °C Read and write
Settings 10
Unoccupied setpointTarget temperature while unoccupied, in 0.5 °C steps. °C 5 to 30 °C Read and write
OccupancyWhich of the two setpoints applies. - occupiedunoccupied Read and write
Control cycle15 seconds for baseboards and convectors, 15 minutes for fan-forced heaters. - 15_sec15_min Read and write
Second displayWhat the small line of the display shows. - autosetpointoutdoor temp Read and write
Outdoor temperature shownAn outdoor temperature written to the thermostat for its display. °C -99.5 to 99.5 °C Read and write
Outdoor temperature timeoutHow long a written outdoor temperature stays valid. s 30 to 64,800 s Read and write
Display unit - celsiusfahrenheit Read and write
Time format - 24h12h Read and write
BacklightBacklight dimming: on demand or sensing. - on_demandsensing Read and write
Keypad lockLocks the thermostat’s buttons. - unlocklock1 Read and write

Occupied and unoccupied heating setpoints are written in 0.5 °C steps from 5 to 30 °C. System mode is off or heat.7

Voltage, current and power come from the standard electrical measurement cluster, and the energy total from the metering cluster, in kWh.7

Eco mode shifts the active setpoint by -10 to +10 °C in 0.5 °C steps for demand response, and has a value that turns it off.7

The clock and the outdoor temperature on the display both come from the network. An outdoor temperature written to the thermostat expires after a timeout of 30 seconds to 18 hours.27

Setup

  1. Wire it with the heating off

    Switch off the heating breaker at the panel. Connect the thermostat’s wires to the circuit wires with the connectors supplied; they are not polarised. Use CO/ALR connectors on aluminium conductors. Sinopé requires a certified electrician for the installation.2

  2. Close it and restore power

    Replace the cover, lock it and switch the breaker back on. The display shows the room temperature.2

  3. Match the cycle to the heater

    Baseboards, convectors and radiant ceilings use the short cycle. A fan-forced convector needs the long cycle. Set it in the thermostat’s menu, or from Edge once it has joined.2

  4. Join the Zigbee network

    Open pairing on the Gateway’s Zigbee network in Edge, then press the thermostat’s two buttons briefly at the same time. The network icon blinks while it connects and stays lit once it has joined. If the join fails, the icon disappears.2

  5. Check one reading

    Confirm that Edge identifies it as a Sinopé TH1123ZB. Raise the setpoint above room temperature and check that heating demand and power rise.

Common questions

Does the TH1123ZB need a Sinopé GT130 hub?
No. Sinopé’s installation guide covers pairing with the GT130 or with a compatible Zigbee gateway. It is a Zigbee 3.0 device, so it joins the Zigbee radio on an EpiSensor Gateway and Edge reads it locally, without Neviweb.12
Does it measure the heater’s energy use?
Yes. It reports the voltage, current, power and cumulative energy of the heater it switches, and Edge records them for each thermostat. Sinopé’s documents give no metering accuracy class for these readings, so use them to compare rooms and schedules rather than to bill.17
Can it control a fan-forced heater?
Yes, one fan-forced convector per thermostat, drawing at least 4.16 A (1000 W at 240 V). Set the long control cycle for it.23
Can it switch a heat pump, a motor or a lighting load?
No. Sinopé rates it for resistive electric heating only.1
How do I remove it from a Zigbee network?
Hold the up and down buttons together for 10 seconds. FACT RST shows on the display for about 5 seconds and the thermostat leaves the network, ready to pair again.25