The short version: The TH1400ZB is Sinopé’s low-voltage (24V) Zigbee thermostat, built to drive an external relay or contactor rather than switching line voltage directly. That makes it the right pick for larger or higher-wattage electric in-floor heating installations where Sinopé’s directly-wired TH1300ZB isn’t enough headroom, or for two-stage setups using its auxiliary output. It’s a more specialized, install-with-care product than Sinopé’s baseboard line, and the buyer research reflects that: it’s well documented on spec, thinner on independent owner reviews.

Who It’s For

This is a low-voltage (24V) control thermostat, not a direct line-voltage switch. It’s designed for electric floor heating, baseboard heating, or valve-based systems where the thermostat controls a relay, contactor, or zone valve rather than switching the heating load itself. In practice, that means:

  • Larger in-floor heating zones or multiple mats where the combined load exceeds what a directly-wired floor thermostat like the TH1300ZB can switch on its own
  • Installations that want a second heating stage — the TH1400ZB has an auxiliary output that can run as a second stage alongside the primary
  • Setups where an electrician has already specified a 24V control scheme (common in larger or custom radiant floor installs)

If you have a single small bathroom floor-heating mat, Sinopé’s directly-wired TH1300ZB or Mysa’s in-floor thermostat are simpler, more common choices. The TH1400ZB is for a bigger or more complex job.

Design & Build

Same Sinopé housing as the rest of the line: a white rectangular unit with a backlit LCD display and physical buttons for manual adjustment.

Setup & Compatibility

Voltage: 24V control only. This thermostat does not switch line voltage directly — it needs an external relay or contactor sized for your actual floor-heating load, which your electrician specifies separately.

Auxiliary output: A second output can run a second stage of heating, letting you configure ambient control with floor limit, floor-only control, or ambient-only control depending on how your system is wired.

Heating types: Electric floor heating, electric baseboard heating (via relay), and valve-based systems.

Hub requirement: Zigbee 3.0, requiring Sinopé’s GT130 gateway and the Neviweb app — same ecosystem as Sinopé’s other Zigbee thermostats, so if you already run a Sinopé/Neviweb household, this integrates onto the existing hub.

Warranty: 3 years.

Installation: This is a job for a licensed electrician in most cases. Because it’s a low-voltage control device wired to an external relay or contactor rather than a simple thermostat swap, the design and sizing of the relay/contactor requires electrical knowledge beyond what a straightforward line-voltage thermostat replacement needs. Don’t treat this as a DIY weekend project unless you have that background.

App & Ecosystem

Runs through the same Neviweb app as Sinopé’s baseboard lineup: scheduling, away/vacation mode, frost protection, and energy reporting. Once on the GT130 hub, it appears alongside any other Sinopé Zigbee devices on one dashboard.

Smart home support: Alexa and Google Home via SmartThings or Neviweb integration; Samsung SmartThings natively; no Apple HomeKit.

Buyer Feedback: What We Found

Sinopé’s own technical documentation (fact sheets, installation manuals, submittal data sheets) for the TH1400ZB is detailed and consistent across distributor listings, which is typical for a thermostat aimed more at electricians and larger installs than casual DIY buyers. We did not find meaningful independent long-form reviews or forum discussion specific to this model — it’s a lower-volume, more specialized product than Sinopé’s baseboard thermostats, and buyer feedback online reflects that. Treat this section’s guidance as spec-based rather than backed by a body of owner reviews.

Price & Value

TH1400ZB
Price (CAD) ~$130–180
Relay/contactor Sold separately, sized to your load by your electrician
GT130 hub Sold separately (one hub covers multiple thermostats)
Warranty 3 years

Factor in the relay/contactor and likely electrician labor when budgeting — this isn’t a self-contained purchase the way a directly-wired thermostat is.

Rebate Eligibility

Eligibility for low-voltage/relay-controlled floor-heating thermostats varies by program and isn’t as consistently listed as for standard central-HVAC thermostats. Verify current qualifying lists with your utility or Énergir before purchasing.

See Smart Thermostat Rebates in Canada by Province for the broader picture.

Pros & Cons

Pros:
– Handles larger or higher-wattage floor-heating installs that a directly-wired thermostat can’t switch on its own
– Auxiliary output supports two-stage heating configurations
– Integrates onto the same Neviweb/GT130 ecosystem as other Sinopé devices
– 3-year warranty

Cons:
– Requires an external relay or contactor, adding cost and complexity versus a directly-wired thermostat
– Best installed by a licensed electrician, not a casual DIY swap
– Thin independent review coverage — this is a lower-volume, more specialized product
– No Apple HomeKit
– Requires the GT130 hub

The Recommendation

Consider the TH1400ZB if your electric in-floor heating installation is large enough, or complex enough (multiple zones, a second heating stage), that a directly-wired floor thermostat isn’t sized for it. Work with your electrician on relay/contactor sizing before buying.

For a standard single-zone bathroom or kitchen floor-heating mat, Sinopé’s TH1300ZB or Mysa’s in-floor thermostat are simpler and more commonly used.

Frequently Asked Questions

Does the TH1400ZB switch line voltage directly?
No. It’s a 24V low-voltage control thermostat that operates an external relay or contactor, which handles the actual line-voltage switching.

Do I need an electrician to install this?
In most cases, yes. Sizing and wiring the external relay or contactor correctly requires electrical knowledge beyond a standard thermostat swap.

What’s the difference between the TH1400ZB and TH1300ZB?
The TH1300ZB switches line voltage directly for floor heating up to 3600W. The TH1400ZB is a low-voltage control thermostat for larger installs or two-stage setups, requiring an external relay.

Does the TH1400ZB need a hub?
Yes, Sinopé’s GT130 Zigbee gateway, same as the company’s other Zigbee thermostats.

Does it support Apple HomeKit?
No. No Sinopé thermostat model supports HomeKit.

Is the TH1400ZB eligible for rebates?
Eligibility for low-voltage, relay-controlled floor-heating thermostats varies by program and isn’t as consistently listed as standard models. Check with your utility or Énergir directly.