An unprecedented low voltage thermostat for the evolving smart home

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Low voltage smart thermostat 24 Vac – Zigbee

Control, comfort, and savings

A real smart solution to control heating and savings at once

  • One heating system, twice the control

    Control the main heating and auxiliary heating (baseboard, convector) using only one thermostat

  • Hydronic heating, furnace, and floor heating

    A versatile, handy and accessible low voltage heating thermostat (24 Vac). A must for your home

  • Comforting heat

    Control the floor or ambient heating temperature for the perfect comfort

  • Voice control

    Control heating with Google Assistant (Google Home) and Alexa (Amazon Echo) through SmartThings

Low voltage smart thermostat 24 Vac – Zigbee

Explore the Zigbee possibilities

Accessible, easy and complete

Simply designed for the perfect control

  • Outdoor temperature displayed

    A thermostat that gives you the information before you even ask for it

  • Precise and affordable floor control

    Connect a resistive floor sensor of 10 or 12 K to the thermostat and voila!

  • Choice of control cycle

    Adjust the length of the control cycle of the main and auxiliary output according to the type of heating device connected to the thermostat

  • Pump protection

    Activation of the main outlet during the summer to prevent seizure of the hydronic system pump

Low voltage smart thermostat 24 Vac – Zigbee

The Sinopé smart home

The Zigbee smart product line is your home’s ally. Full control is now within your reach.

The Sinopé smart home

The Zigbee smart product line is your home’s ally. Full control is now within your reach.

(FR) b GT125


Height: 12.2 cm (4.8 in)

Width: 7.2 cm (2.88 in)

Depth: 2.6 cm (1.02 in) + 0.76 cm (0.3 in)


The low voltage smart thermostat – Zigbee – 24 Vac is designed to control heating devices such as:

  • Baseboard heater activated by an electronic relay (SSR)
  • Baseboard heater activated by a mechanical relay
  • Fan-forced convector
  • Electric floor heating (activated by a relay)
  • Hydronic floor heating
  • Hydronic heating system
  • Furnace (without fan control)

Cannot be used with:

  • Air conditioning system
  • Heat pump

* The installation requires the presence of 3 wires: supply, load and common.


The low voltage smart thermostat has the following features:

  • Second output allowing the control of an auxiliary heating device
  • Floor or ambient temperature control*
  • Temperature control while taking into account another control mode
  • Selection of the length of the control cycle according to the type of load connected to the thermostat
  • Protection of the pump of a hydronic system during long periods of inactivity
  • Control with your smartphone, tablet or computer**
  • Works with home automation platforms such as SmartThings
  • Can be voice controlled with the Google Assistant (Google Home) and Alexa (Amazon Echo) through SmartThings
  • Integrates with personalized scenes**
  • Outdoor temperature display*
  • Lockable buttons**
  • Temperature display in Celsius or Fahrenheit
  • Backlit display

*Floor sensor not included. Compatible with the Sinopé floor heating sensor or 10K and 12K sensors at 25 ° C.

** Feature available if supported by your Zigbee-compatible hub and its application.

Connectivity requirements


  • Samsung SmartThings Hub V2 or V3 connected to the Internet
  • Smartphone or tablet through the Samsung SmartThings Classic App

Operating voltage

24 Vac

Maximum load

1 Amp

Temperature range

Setpoint: 5 °C to 30 °C (41 °F to 86 °F)

Display: 0 °C to 70 °C (32 °F to 99 °F)


± 0.5 °C (± 1 °F)


-20 °C to 50 °C (-4 °F to 122 °F)

Auxiliary output

1 Amp


Zigbee 3.0 profile

Frequency: 2.4 GHz

Transmission power: +20 dBm

Receiver sensitivity: -108 dBm


3 years

In the box

  • TH1400ZB low voltage smart thermostat
  • Installation guide – English version
  • Installation guide – French version
  • Installation template
  • 2 screws


North American


  • Zigbee
  • 24 Vac
  • Works with SmartThings

In stock

Remote access requires a compatible Zigbee hub

108.95 $ CAD

PROMO FREE STANDARD SHIPPING or all online orders of $50 or more delivered in Canada.

For a limited time, Sinopé technologies is offering FREE STANDARD SHIPPING on all online orders over $50, after promo discounts and before taxes. This shipping offer applies only to orders being shipped to Canada (no postal box shipping). Note that the right to free delivery may be revoked if you change the delivery address of your order or if you cancel one or more items ordered reducing the total before taxes of the order under $50.

The remote access of this product requires a GT130 gateway or a compatible Zigbee hub