Overview
Every SunAura heating system is controlled by a thermostat that deserves the name “smart”. Our WiFi thermostats connect directly to your home network and the Tuya app, giving you remote scheduling, pre-heating, floor and air temperature monitoring, and energy-saving programs — all from your phone, from anywhere in the world.
The range spans 16 certified models (HYWKGR series) for underfloor heating, heating film, mats, cables, boilers and water heating, covering resistive loads from 3 A to 300 A classes for homes and light commercial use.
Key Features
- WiFi + Tuya app — remote control, weekly schedules and pre-heating from anywhere
- Dual sensors — floor sensor and air sensor for precise temperature control
- Touch display — clean interface with child lock and holiday mode
- Energy saving — adaptive scheduling can cut heating consumption by up to 30%
- Compatibility — works with our film, mats, cables and most electric heating loads
- Safety — CE certified, EMC tested to IEC 60335 by ZCT (report ZC/TE210004ER), RoHS compliant
Model Range (HYWKGR Series)
| Model | Load Class | Typical Use |
|---|---|---|
| HYWKGR-0003W to 0009W | 3 A – 9 A | Bathroom film & small mat circuits |
| HYWKGR-0015 to 0025 | 15 A – 25 A | Single-room underfloor heating |
| HYWKGR-030W to 060W | 30 A – 60 A | Large rooms, open-plan areas |
| HYWKGR-080W to 300W | 80 A – 300 A | Commercial and multi-zone systems |
Energy Savings You Can Measure
Underfloor heating already distributes heat more evenly than radiators, allowing a lower set temperature for the same comfort. Adding a smart thermostat with scheduling multiplies that saving: pre-heat only when you need warmth, drop back automatically at night, and monitor consumption from the app. Typical installations report 20–30% lower heating bills versus manual control.
Frequently Asked Questions
Can the thermostat control any floor heating system?
The HYWKGR range is designed for electric underfloor heating loads (film, mat and cable) and compatible electric water systems. Check the load class of your circuit against our model table, or send us your system details and we will confirm compatibility.
Does it work without internet?
Yes — all models work as a standard programmable thermostat locally. WiFi adds app control, remote scheduling and monitoring; a simple wall-mounted program still runs without connectivity.
What certifications do the thermostats carry?
The range is CE certified with EMC testing to IEC 60335 (ZCT report ZC/TE210004ER), RoHS compliant, and backed by SGS documentation. Certificates are available on request.
Thermostat Series Comparison
SunAura offers a full thermostat family, from entry-level digital controllers to WiFi models with voice control. All models share the standard 86×86 mm wall-box format, CE/RoHS certification and compatibility with our graphene heating films, cable mats and heating cables.
| Model | Display | Control | Load | Standout Feature |
|---|---|---|---|---|
| K1M | Large LCD | WiFi app + manual | 16A / 25A | Remote control, anti-freeze, recalibration |
| K2 | Full-colour LED touchscreen | WiFi + weekly programming | 16A / 25A | 6 time periods/day, electric + water + gas boiler modes |
| K2M | Large LED touchscreen | WiFi + voice control | 3A / 16A / 25A | Alexa/Google voice control, 5–60 ℃ range |
| K6 | LED touchscreen | WiFi + AI voice | 16A | Google Home, Alexa, Yandex Alice support |
| K7 | LED digital display | WiFi + AI voice | 16A | Smart home integration, scheduled comfort |
| Tuya | LED touchscreen | Tuya / Smart Life app | 16A | Tuya ecosystem, scene automation |
K1M — Intelligent WiFi Temperature Controller
The K1M is a smart WiFi thermostat for electric floor heating with remote app control, a large LCD display, manual and automatic modes, anti-freeze protection, and temperature recalibration. Settings are retained after power-off, so no reprogramming is needed after outages. Available in 16A standard, 16A WiFi, 25A standard and 25A WiFi variants.
K2 — Full-Colour Touchscreen with Weekly Programming
The K2 combines a full-colour LED touchscreen with advanced weekly programming — up to 6 time periods per day across 7 days. It adapts to electric floor heating, water floor heating and gas boiler systems, and includes WiFi mobile control, child lock and anti-freeze functions.
K2M — Voice-Controlled WiFi Thermostat
The K2M adds built-in voice control compatibility: manage your floor heating hands-free through smart speakers, or use the large LED touchscreen. Specifications: 86×89×40 mm, AC 95–240 V, 3A/16A/25A load options, NTC sensor with ±1 ℃ accuracy, IP20 and PC flame-retardant housing. OEM/ODM customisation, including branding, is supported.
K6 / K7 — WiFi Smart Thermostats with AI Voice
The K6 and K7 are LED touchscreen WiFi thermostats with intelligent AI voice control. Both support Google Home, Amazon Alexa and Yandex Alice, allowing natural-language temperature commands alongside app-based scheduling and monitoring.
Tuya Smart Thermostat — App Ecosystem Control
The Tuya-compatible thermostat puts full control in the Tuya/Smart Life app: remote temperature management, weekly schedules, scene automation and energy-saving set-backs. It is the ideal choice for customers already using the Tuya ecosystem for lights, plugs and sensors.
All thermostats ship with a floor sensor and full installation manual. Our engineers help match the right model and load rating to your heating zone, floor type and smart-home setup.
How to Buy SunAura Smart Thermostats — Wholesale, OEM & Factory-Direct
Looking for a WiFi thermostat for underfloor heating that ships factory-direct, or a smart thermostat for electric floor heating at wholesale pricing for a distribution project? SunAura Thermal supplies the full HYWKGR thermostat range to installers, heating-system distributors and private-label brands from our Qingdao ISO-managed factory, with batch testing on every unit and CE/RoHS documentation on file. Whether you need a single-room controller for a renovation or a multi-zone smart heating control package for a housing project, we quote every enquiry the same working day.
Every order is tailored to the load class of your heating circuit. Send us the total wattage, the floor build-up (tile, wood, laminate, LVT or stone) and the room count, and our engineers will recommend the right HYWKGR model — from 3 A bathroom film circuits up to 80–300 A commercial and multi-zone systems. We also support OEM/ODM projects with private-label branding, custom faceplate colours, bespoke weekly programmes and tailored packaging, and can pre-configure temperature limits, floor-sensor thresholds and app pairing profiles before the units leave the factory.
| Ordering Option | Details |
|---|---|
| Wholesale price | Volume-tiered EXW / FOB Qingdao quotation based on model, quantity and packaging |
| MOQ | MOQ and pricing depend on model and quantity — send your enquiry for a same-day quotation |
| Bulk discounts | Available for distributor and installer projects across mixed-model thermostat orders |
| Free samples | Sample units available for evaluation; courier freight quoted separately |
| Lead time | Stocked SKUs ship quickly; private-label and OEM production scheduled per PO |
| OEM / private label | Custom branding, faceplate colour, packaging and pre-set weekly programmes |
| Certification documents | CE, RoHS and SGS documentation (ZCT EMC report ZC/TE210004ER) supplied with shipment |
| Drop shipping | Consolidated container and drop-ship logistics supported to 50+ countries |
Ready to discuss your project? Contact our sales team with your load list, or message us on WhatsApp for a same-day reply. Browse the full range on the thermostats and controls category page, and see real installations across residential, hotel and light-commercial jobs in our applications gallery.
Choosing the Right Smart Thermostat for Your Heating System
With 16 certified models in the HYWKGR family, selecting the correct controller comes down to three questions: what load are you switching, what floor finish are you heating, and how much remote control do you actually want. This buying guide walks through the most common spec sheets we see on the thermostat FAQ page every week.
By load class. Small bathroom film and single mat circuits in the 3–9 A range are comfortably handled by the HYWKGR-0003W to 0009W series. Single-room underfloor heating on a 15–25 A circuit picks the HYWKGR-0015 to 0025 range. Open-plan living areas and larger rooms move up to 30–60 A, while commercial and multi-zone projects specify 80–300 A. If you are building a smart heating system from scratch, our large-screen WiFi thermostat with app scheduling is the most popular single-room choice, while the dual-version 16 A / 3 A WiFi thermostat for hydronic and electric floors covers mixed-load homes on one faceplate.
By control style. If you want a boiler thermostat with weekly programming and hands-free voice control, the colour-touch WiFi thermostat for hydronic and electric underfloor heating pairs with Alexa, Google Home and Yandex Alice and offers an RS485 central-control option for building projects. If you prefer a simpler, self-contained wired controller without app dependency, the entry-level K1 series is the dependable choice. For retrofit projects where space or wiring is tight, compact form-factor models such as the round-knob WiFi heating thermostat and the RF wireless thermostat for boiler and water heating remove the need to run new mains cabling to every room.
By floor finish. Tile and stone tolerate direct air-sensor control, but wood, laminate and LVT must be protected with an external NTC floor-limiting probe — every SunAura WiFi thermostat supports this sensor option, and we recommend running it beneath the film or cable during installation. For renovation jobs where only a thin build-up is possible, pair the thermostat with our aluminium-film renovation mats for a low-profile, factory-matched package.
FAQ
What is a smart thermostat and how does it save heating energy?
A smart thermostat adds WiFi connectivity and a phone app to a conventional programmable controller, so you can schedule, pre-heat and set-back heating remotely. Because underfloor heating already runs at a lower water or floor temperature than radiators, combining it with weekly scheduling typically cuts consumption by 20–30% versus manual control, which is why a WiFi thermostat for underfloor heating is the standard upgrade in modern homes.
Can one SunAura thermostat control both electric and hydronic underfloor heating?
Some models are offered in two wiring versions: a direct-switching 16 A / 25 A model for electric film, mats and cables, and a 3 A dry-contact (NO/NC) model that calls a gas boiler or hydronic zone actuator. If your project mixes electric and water loops, order the appropriate SKU per room and we will confirm compatibility before shipment.
Do SunAura smart thermostats work without internet?
Yes. Every HYWKGR model runs as a fully functional programmable wall thermostat locally, with the weekly schedule, child lock and antifreeze settings kept in non-volatile memory. WiFi only adds app control, remote scheduling and monitoring — if the internet drops, the heating programme continues exactly as programmed.
Which voice assistants do the WiFi thermostats support?
The voice-enabled models work with the Tuya-compatible smart home ecosystem and support Amazon Alexa, Google Home and Yandex Alice once you link the thermostat skill in your assistant app. The K1 wired range and the entry-level digital controllers do not include voice control.
Can I buy a single sample thermostat before placing a bulk order?
Yes. Sample units are available for installers and distributors who want to bench-test or demo the range before a volume order. Send us the model and load rating you are evaluating, and we will quote the sample plus courier freight the same day. Bulk discounts, MOQ and lead time depend on model and quantity — send your enquiry for a same-day quotation.
Does SunAura offer private-label or OEM thermostat branding?
Yes. With more than 17 years of OEM/ODM experience, SunAura supports distributors and heating brands with private-labelled faceplates, custom packaging, pre-set weekly programmes and branded app pairing. Share your logo, colour preference and target markets, and we will propose a tailored SKU list.
What certifications come with the thermostat shipment?
The HYWKGR range is CE certified, EMC tested to IEC 60335 by ZCT (report ZC/TE210004ER) and RoHS compliant, with independent SGS documentation on file. Certificates and test reports are supplied with shipment for importer compliance files; tell us your market when ordering so we include the right paperwork.
How do I choose between a WiFi thermostat and a simple wired thermostat?
Choose WiFi if you want remote pre-heating, app scheduling, voice control or energy monitoring. Choose a wired non-WiFi model if the room must run on a fixed weekly programme with no app dependency — for example in rental units, hotel guest rooms or elderly-care rooms where a simple, locked controller is preferred. Both families share the same 86×86 mm wall-box format.
9. Which SunAura smart thermostat is best for hydronic underfloor heating?
For a smart thermostat for hydronic underfloor heating, choose a 3 A dry-contact (NO/NC) model — the K2M 3 A or the K9 3 A version. The volt-free output calls the wall-hung gas boiler and drives the NC/NO zone actuators on the manifold, without touching the boiler’s internal wiring. The internal room sensor runs the weekly schedule, while the boiler’s own safety controls remain in place. Send us your manifold and boiler model for a confirmed SKU.
10. Are SunAura WiFi thermostats compatible with a 16 A heating cable circuit?
Yes — the 16 A direct-switching HYWKGR models are rated to switch typical electric underfloor heating loads up to about 3,500 W at 220 V, which covers most single-room heating cable, film and 160 W/m² mat circuits. Always confirm the total wattage of the connected cable against the thermostat rating before wiring, and add an external NTC floor sensor for wood, laminate or LVT finishes. For loads above 16 A, specify the 25 A or higher current class.
11. How does OEM private label thermostat ordering work?
Tell us your logo, preferred faceplate colour, target markets and the split of load ratings (3 A / 16 A / 25 A / dry-contact). We will propose a tailored SKU list, artwork proofs and a same-day EXW / FOB quotation, then pre-configure weekly programmes, floor-sensor limits and app pairing before the units leave the Qingdao factory. Private-label MOQ and bulk discounts depend on model and quantity; free samples are available for evaluation.
Related Products You May Need
Pair this product with compatible SunAura components — one factory, one warranty.
K1 Thermostat
Reliable wired thermostat — white backlight LCD, ±1 °C accuracy, 3A/16A/25A load options, child lock and weekly timing for film, mat and cable heating.
K1M WiFi Thermostat
WiFi smart thermostat with colour LCD, Tuya app, weekly scheduling, child lock and antifreeze — for film, mat, cable and panel heating.
K2M WiFi Thermostat
WiFi smart floor heating thermostat with weekly programming, app control and 16A/25A electric or 3A boiler/dry-contact versions for underfloor heating.
K9 WiFi Smart Thermostat
Color-touch smart thermostat with app and voice control, for floor heating and boiler systems.