Overview
The SunAura K6H is a wall-mounted WiFi smart thermostat with a full-screen LED touch display and a slim black glass front panel, purpose-built for underfloor heating systems — electric underfloor heating (heating cables, heating mats and heating film) as well as water underfloor heating driven by a boiler or heat source. Instead of mechanical buttons, the K6H uses a complete glass touch surface: power, menu, clock and up/down keys are all capacitive touch zones, giving the front face a clean, modern look that suits living rooms, bedrooms, kitchens, bathrooms and light commercial spaces.
Where the K6H really earns its place is control. It connects to your home WiFi and the Tuya-compatible smart home app, so you can set a seven-day heating programme, pre-heat rooms before you wake up or come home, switch freely between manual and automatic mode, and check or adjust the temperature remotely from your phone. Settings are saved in the device itself, so a power cut will never wipe your programme. For homeowners, installers, heating distributors and OEM brands, the K6H combines the dependable hardware of a dedicated heating thermostat with the convenience of a modern smart home controller.
The K6H is manufactured by SunAura Thermal, an ISO-managed factory in Qingdao, China, with more than 17 years of OEM/ODM experience supplying heating controls to customers in 50+ countries. Every unit passes in-line testing and a final aging check before shipment, carries CE, RoHS and FC compliance, and is backed by a 2-year warranty.
Key Features
- Full-screen LED touch display — a complete black-glass touch surface shows room temperature, set temperature, clock, weekday and running status with no visible mechanical buttons.
- WiFi app remote control — works with the Tuya-compatible app (iOS / Android) for remote scheduling, temperature adjustment and status checking from anywhere.
- Seven-day weekly programming — independent time periods for Sunday through Saturday, each with its own target temperature, so heating follows your daily routine instead of running all day.
- Manual / automatic mode — hold a fixed comfort temperature manually, or let the thermostat run your weekly programme automatically.
- Power-off memory — all user settings and the weekly programme are retained when the power is cut; the thermostat resumes automatically when power returns.
- Child lock — locks the touch screen so children at home cannot accidentally change the temperature or the programme.
- Energy-saving leaf and sleep mode — an energy-saving leaf icon marks eco operation, and a sleep moon-and-stars icon lowers the setback temperature overnight.
- Dual output versions — choose the 16 A version for electric underfloor heating, or the 3 A dry-contact (NO) version to switch a boiler or water-heating system.
- Wide power supply — AC 95–240 V, 50/60 Hz, works reliably on mains supplies in most countries.
Display & Icon Guide
The K6H screen communicates the full heating state at a glance. The large central readout shows the current room temperature (for example 28.5 °C), while the top bar displays the clock and the current weekday (Mon through Sun). When the output is heating, the flame icon lights up. A timer icon shows that a programmed period is active, the energy-saving leaf marks eco setback operation, and the sleep moon-and-stars icon indicates night setback mode. The child-lock icon confirms that touch operation is locked, and the WiFi connection icon shows the status of the app link. A weather forecast row shows outdoor conditions including temperature and humidity, displayed as simple sky-condition symbols.
Below the screen, four touch zones run across the lower bezel: the menu grid key opens settings, the clock key sets the time and weekly programme, the power key switches the unit on and off, and the up / down touch zones raise or lower the set temperature. There are no moving parts to wear out — the glass surface is smooth and easy to wipe clean.
Physically the K6H measures 86 × 86 × 40 mm, matching the standard European 86-box footprint, and mounts on a wall box with a 60 mm fixing hole spacing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product name | Intelligent underfloor heating temperature controller |
| Model | K6H WiFi LED touch-screen underfloor heating thermostat |
| Dimensions | 86 × 86 × 40 mm |
| Voltage | AC 95–240 V, 50/60 Hz |
| Carrying current | 3 A / 16 A / 20 A versions available |
| Material | PC flame-retardant housing, IP20 |
| Temperature setting range | 5–60 °C |
| Self consumption | < 1 W |
| Sensor | NTC thermistor (internal air sensor; external floor sensor option) |
| Display | LCD screen, full-screen LED touch panel |
| Temperature accuracy | ±1 °C |
| Control modes | Manual / automatic weekly programme, child lock, sleep setback, power-off memory |
| Wireless | WiFi 2.4 GHz, Tuya-compatible app (iOS / Android), works with Tuya-compatible voice assistants |
| Wiring — electric version | 16 A resistive output; terminals 1 = L, 2 = N, 3 = N1, 4 = L1; external floor sensor on terminals 6 / 7 (β = 3950, R₂₅°C = 10 kΩ) |
| Wiring — boiler version | 3 A NO dry contact for boiler / water underfloor heating |
| Certification | CE, RoHS, FC |
| Warranty | 2-year warranty with SunAura after-sales support |
Applications
The K6H covers the two most common underfloor heating control jobs from a single product family:
- Electric underfloor heating — 16 A version — heating cables, heating mats, heating film and electric underfloor heating boards beneath tile, laminate, engineered wood and LVT floors.
- Water underfloor heating / boiler — 3 A version — dry-contact (NO) switching for gas boilers, wall-hung boilers, heat pumps and water underfloor heating zone controls.
- Residential projects — living rooms, bedrooms, bathrooms, kitchens and home offices.
- Light commercial projects — offices, shops, studios, hotels and classrooms where weekly scheduling saves energy.
Installation
- Drill and mount — fix the expansion screws (Ø 3–3.5 mm) on the wall at the standard 60 mm hole spacing.
- Wire the back cover — connect the mains and load wires to the labelled terminals: for the 16 A electric version, terminals 1 = L, 2 = N, 3 = N1, 4 = L1, with the external floor sensor on terminals 6 / 7; for the 3 A boiler version, use the NO dry-contact terminals.
- Secure the base — screw the back plate to the wall box, arrange the wires neatly and snap the front panel back into place.
- Power on and pair — apply power, follow the on-screen prompts to set the clock and weekday, then pair the thermostat with the Tuya-compatible app over the 2.4 GHz WiFi network.
The K6H should be installed by a qualified electrician, and the connected load must never exceed the rated output of the chosen version. A wiring diagram and installation guide ship with every order, and our engineers are available by WhatsApp for remote commissioning support.
Compatibility with SunAura Heating Systems
The K6H is the natural control partner for the full SunAura heating range: electric underfloor heating mats, heating cables, heating film and electric floor-heating boards, together with water underfloor heating manifolds and boiler interfaces. When you buy heating products from SunAura, we can pre-configure the K6H’s temperature range, floor-sensor selection and weekly programme to match your exact floor build-up and room use. We offer the complete package — heating element, thermostat, insulation and accessories — from a single factory source with one warranty and one after-sales contact.
Quality, Certification & Support
SunAura Thermal has manufactured heating controls and electric heating products since 2008 from our Qingdao factory, operating with ISO-style quality management and in-line testing on every thermostat batch. Production runs through SMT mounting, soldering, assembly, a temperature-controlled aging run and a final finished-product test before packing. The K6H is CE, RoHS and FC compliant, with certification documents available for review. We support distributors, installers and OEM customers with private-labelled branding, custom weekly programmes, custom packaging and drop-ship logistics to more than 50 countries, and every unit carries a 2-year warranty with direct WhatsApp after-sales support.
FAQ
1. Which version do I need — 16 A or 3 A?
Choose the 16 A version if you are switching an electric heating load directly (heating cables, mats or film up to the rated current). Choose the 3 A version if you are controlling a boiler, wall-hung boiler or water underfloor heating system — the thermostat then works as a volt-free NO dry contact.
2. How does the weekly programming work?
The K6H supports independent programming for each day from Sunday to Saturday. You set several time periods per day, each with its own target temperature, and the thermostat switches between them automatically in automatic mode. You can edit the schedule directly on the touch screen or remotely in the app.
3. How do I pair the thermostat with the phone app?
Install the Tuya-compatible app, register an account, add a thermostat device, and follow the in-app prompts while the thermostat is in pairing mode. Keep your phone on the 2.4 GHz WiFi network during pairing — the K6H does not support 5 GHz WiFi.
4. What happens to my settings during a power cut?
The K6H has power-off memory: your weekly programme, set temperatures and mode are stored permanently in the device. When power returns, the thermostat resumes the last programme automatically — there is no need to re-enter any settings.
5. Can I use an external floor sensor?
Yes. The 16 A electric version works with an external NTC floor sensor (β = 3950, R₂₅°C = 10 kΩ) connected to terminals 6 / 7. You can select floor-sensor control or air-sensor control in the device menu; floor-sensor control is recommended for underfloor heating installations to protect the floor covering.
6. How do I recalibrate the displayed temperature?
Use the temperature calibration option in the device menu or app to offset the reading against a reference thermometer. A typical offset is within ±1 °C, used to compensate for wall position or sensor location so the display matches a trusted thermometer.
7. What does the child lock do?
The child lock disables the touch keys so children at home cannot accidentally change the temperature or programme. The lock icon appears on screen when it is active, and you unlock it again from the touch menu or the app.
8. What is the warranty and after-sales support?
Every K6H includes a 2-year warranty and direct after-sales support from SunAura — spare parts, configuration help and commissioning guidance by WhatsApp, in English, German, French and Chinese.
Searching for a glass-panel WiFi thermostat with weather display for a modern living room, or a wide-voltage AC 95-240V underfloor heating thermostat that works reliably on mains supplies from most countries? The K6H fits both briefs: a slim 86×86×40 mm black-glass front with a full-screen LED touch panel and an on-screen weather forecast row, available in 16 A electric, 3 A boiler dry-contact and 20 A variants. Below we set out factory-direct purchasing terms, customization options and the long-tail questions installers ask us most.
How to Buy the K6H — Factory-Direct Pricing
SunAura Thermal supplies the K6H directly from our Qingdao factory to distributors, heating contractors and private-label brands across 50+ countries. Wholesale pricing is tiered by variant (3 A / 16 A / 20 A) and quantity, and MOQ depends on your project mix — send us your room-by-room load list and we return a same-day quotation. Bulk discounts run from trial orders up to full-container shipments, EXW or FOB terms are quoted on request, and CE, RoHS and FC compliance documents are supplied with every order. Evaluation samples are available before bulk purchase; the sample and courier charge is confirmed per enquiry, and drop shipping direct to your installers is available worldwide.
| Item | Typical factory-direct term |
|---|---|
| MOQ | MOQ and pricing depend on variant (3 A / 16 A / 20 A) and quantity — send your enquiry for a same-day quotation |
| Bulk discount | Tiered price breaks from small trial orders to full-container shipments |
| Lead time | Stock variants ship quickly after payment confirmation; OEM/private-label orders vary with packaging |
| Samples | Evaluation samples available; sample and courier cost confirmed per enquiry |
| OEM / ODM | Private-label branding, pre-loaded weekly programmes, custom packaging and faceplate options |
| Certification | CE, RoHS and FC documentation supplied with the order |
Request a quote by contacting our sales team or messaging us on WhatsApp, telling us whether each room runs electric heating cables and mats, water underfloor loops or a wall-hung boiler. The full controller line-up is listed in our thermostats and controls category — compare, for example, the colour-touch K9 smart thermostat or the K1M programmable WiFi thermostat for zones where a different interface suits the interior.
Ordering & Customization for Projects
For multi-room projects we pre-configure each K6H before dispatch: the seven-day schedule can be matched to your local wake-up, working-day and bedtime routine, the external NTC floor sensor (β = 3950, 10 kΩ at 25 °C, terminals 6/7) can be specified per room, and sleep setback and energy-saving leaf thresholds can be set to your market’s default comfort values. Because the K6H runs on AC 95–240 V, one SKU covers mains supplies across most destination countries, simplifying stocking and spares for distributors. OEM customers also receive private-labelled cartons, custom faceplate options and pre-loaded weekly programmes aligned to their own installation manuals.
More Frequently Asked Questions
9. How is the weather forecast shown on the K6H screen?
A weather row on the LED display shows outdoor conditions — temperature, humidity and simple sky-condition symbols — pulled through the connected WiFi and Tuya-compatible app, alongside the room temperature, clock, weekday, heating flame, energy-saving leaf and sleep moon icons. It is a comfort reference for occupants rather than a control input; the thermostat still regulates the room from its internal air sensor or the external floor sensor you select.
10. Does the K6H fit a standard European 86 mm wall box?
Yes. The K6H measures 86 × 86 × 40 mm and mounts on the standard 86-box footprint with a 60 mm fixing hole spacing, so it drops into most existing thermostat back boxes without replastering. Wiring follows the labelled terminals — mains 1 (L) / 2 (N), load 3 (N1) / 4 (L1) on the 16 A electric version, or the NO dry-contact terminals on the 3 A boiler version — and should be completed by a qualified electrician.
11. Can distributors buy K6H units with private-label branding?
Yes. SunAura offers private-labelled K6H units with your logo, custom packaging and pre-loaded schedules, backed by CE, RoHS and FC documentation supplied with the order. Start by sending our sales team your room list, review lead times and commissioning support on our main FAQ page, and browse completed electric and hydronic floor installations in our applications gallery. For rooms where a separate humidity readout is wanted, pair the thermostat with our indoor thermometer-hygrometer.
What does the K6H look like?
The K6H is a slim black-glass wall thermostat with a full-screen LED touch display. The black front panel, minimal bezel and edge-to-edge digits are designed to blend into modern interiors.
Is the K6H suitable for electric underfloor heating?
Yes. The K6Hu2019s 16 A relay is purpose-built for electric underfloor heating u2014 heating film, heating cables and heating mats u2014 up to about 3600 W per unit. Use an external contactor for larger arrays.
Does the K6H include a floor sensor?
Yes. An external NTC floor probe (3 m lead, included) plugs into the terminal block. You can enable floor-temperature limiting to protect wooden floors, or run the unit on floor-sensor mode.
How do I control the K6H when away?
Through the Tuya Smart / Smart Life app over 2.4 GHz WiFi: adjust setpoint, check current temperature, run the 7-day schedule and set holiday/away mode. Alexa and Google Home voice control are also supported.
Can the K6H be custom-branded?
Yes. SunAura offers OEM/ODM on the K6H: custom logo on the black glass, custom fascia colour, multilingual firmware and private-label boxes. We support both sample orders and container-volume production.
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