Overview
The SunAura K1 is a reliable, easy-to-operate wall thermostat for electric heating systems — heating film, underfloor mats, heating cables, wall panels and infrared heaters. With a clear LCD that shows room temperature and set temperature side by side, white backlighting for night-time readability, and three working modes (energy-saving, timing and manual), the K1 gives every home and light-commercial space simple, accurate temperature control.
Unlike app-dependent controllers, the K1 is a self-contained wired thermostat: set it, forget it, and let the weekly or daily programme run. It supports resistive heating loads up to 16 A (25 A on request), offers a 3 A dry-contact relay version for controlling large loads through a contactor, and is protected against temperature drift with ±1 °C accuracy and a flame-retardant PC housing rated IP20.
The K1 is manufactured by SunAura Thermal in Qingdao, China — an ISO-managed factory with 17+ years of OEM/ODM experience supplying heating controls to distributors in more than 50 countries. Every unit is batch-tested before shipment and carries CE marking with RoHS compliance.
Key Features
- White backlight — softly lit LCD that is easy to read at night without disturbing the room.
- Displays current temperature — real-time indoor temperature shown continuously, clearly labelled ROOM.
- Displays target temperature — set temperature shown with a SET label so it is never confused with the measured reading.
- Child lock — prevents children and guests from accidentally changing the settings.
- Simple key operation — power, mode, timer and up/down keys with intuitive, easy-to-understand control.
- Three working modes — energy-saving mode, timing mode and manual mode cover daily life, holidays and constant comfort.
- Multi-range loads — 3 A dry-contact, 16 A and 25 A versions; choose the power rating according to your actual heating load.
Display & Icon Guide
The K1 screen is designed for at-a-glance reading: the week row shows Mon–Sun, the time area shows the clock and programme status (ON/OFF), indoor temperature is displayed large with the ROOM label, and the mode, heating and lock icons show the current operating state. Temperature can be displayed in °C or °F, and the SET indicator always marks the target temperature.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product name | Thermostat (K1 series) |
| Housing material | IP20 / flame-retardant PC |
| Power supply | 90–240 VAC, 50/60 Hz |
| Load rating | 3 A dry contact / 16 A / 25 A versions (choose per load) |
| Measurement accuracy | ±1 °C |
| Temperature setting range | 10–40 °C (display °C or °F) |
| Product size | 86 × 86 × 41 mm (standard 86-box mount) |
| Display | LCD with white backlight; room temperature, set temperature, week, clock, mode, heating and lock icons |
| Control | Power / mode / timer / up / down keys |
| Working modes | Energy-saving, timing (weekly programme), manual |
| Safety | Child lock, ±1 °C accuracy protection, flame-retardant housing, CE marked |
| Warranty | 2-year standard warranty with SunAura after-sales support |
Wiring & Load Options
Two wiring versions cover almost every installation: the 3 A dry-contact model (K1RH3A, AC90–240 V, IP20) switches an external contactor for very large loads, while the 16 A model (K1H16A) drives heating film, mats and cables up to ≈3,500 W at 220 V directly. Terminals are clearly marked (L, N, load and sensor), and a 25 A version is available on request for high-power projects. Each unit passes a QC check before packing.
Applications
- Home — bedrooms, living rooms, bathrooms and study rooms with film, mat or cable heating.
- Office — constant, quiet heating for workplaces, meeting rooms and reception areas.
- Hotel — guest-room heating with simple operation and child lock for family suites.
- Market / light commercial — shops, salons, clinics and small commercial spaces with clean wall-mounted control.
Compatibility with SunAura Heating Systems
The K1 is the dependable wired controller for the whole SunAura electric heating range — graphene heating film, 160 W/m² heating mats, double-conductor heating cables, aluminum-film renovation mats and DIY installation kits. When you buy the heating element and thermostat together from SunAura, we match the thermostat rating to your load, pre-set the temperature range for your floor build-up, and ship heater, thermostat, insulation and accessories as one factory-direct package under a single warranty.
Quality, Certification & Support
SunAura Thermal has produced electric heating products and controls since 2008 from our Qingdao factory, operating under ISO-style quality management with batch testing on every thermostat line. The K1 carries CE marking and RoHS compliance, and SGS certification documents are available on request. We support distributors and OEM customers with private-label branding, custom programmes, packaging design and consolidated shipping to more than 50 countries.
FAQ
1. What is the difference between the 3 A, 16 A and 25 A versions?
The 3 A version is a dry-contact relay that switches an external contactor — used for very large or industrial heating loads. The 16 A version drives typical home loads (film, mats, cables up to ≈3,500 W at 220 V) directly. The 25 A version is for high-power projects and is available on request. Choose the power rating according to your actual needs.
2. Does the K1 have WiFi or app control?
The K1 is a self-contained wired thermostat with weekly timing programmes — no WiFi required. If you need remote control from a phone, ask for the SunAura K1M WiFi thermostat, which pairs with the Tuya app for scheduling and pre-heating from anywhere.
3. What does the energy-saving mode do?
Energy-saving mode runs a reduced set temperature outside your active hours, so heating only works hard when you need it — typically cutting consumption compared with running a constant temperature all day.
4. How do I set the weekly timing programme?
Use the timing mode and the up/down keys to set each period’s time and temperature; the weekday and weekend programmes can be configured independently. A wiring and user guide ships with every unit.
5. How accurate is the temperature measurement?
The K1 measures with ±1 °C accuracy. Where the wall position makes the reading run slightly warm or cool, the display can be adjusted to match a reference thermometer.
6. Is the K1 safe for bathrooms?
The housing is rated IP20 (protection against solid objects) with flame-retardant PC material. For wet zones, install the thermostat outside the splash area and follow the local electrical code; a qualified electrician should carry out the wiring.
7. Can the K1 control SunAura heating film or cables?
Yes — the K1 is designed to switch the full SunAura electric heating range within its rated load. If your floor build-up includes a floor sensor, confirm the sensor option when ordering.
8. What is the warranty and after-sales support?
Every K1 includes a 2-year warranty and direct SunAura after-sales support — spare parts, configuration help and commissioning guidance by WhatsApp, in English, German, French and Chinese.
How to Buy the K1 Wired Thermostat — Wholesale, OEM & Factory-Direct
Looking for a reliable wired thermostat for electric underfloor heating that ships without app or WiFi dependency? The SunAura K1 is the workhorse wall controller chosen by installers, hotel procurement teams and heating-system distributors who want a set-and-forget non-WiFi programmable thermostat for heating film, mats and cables. Every K1 is batch-tested on the line in our Qingdao ISO-managed factory, CE marked and RoHS compliant, and exported to more than 50 countries. We quote every enquiry the same working day.
Because the K1 is a self-contained wired controller with no cloud, no app and no subscription, it is a natural choice for rental apartments, hotel guest rooms, care homes and student accommodation — places where a locked, tamper-resistant weekly programme is preferred over a phone app. It is also the right answer for homeowners who want a simple manual boiler thermostat with weekly timer and do not want to manage yet another smart-home device.
| Ordering Option | Details |
|---|---|
| Wholesale price | Volume-tiered EXW / FOB Qingdao quotation based on 3 A / 16 A / 25 A variant and quantity |
| 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, including mixed orders with K1M WiFi and SunAura heating elements |
| 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 faceplate, logo, packaging and pre-set weekly programmes |
| Certification documents | CE, RoHS and SGS documentation supplied with shipment for importer compliance files |
| Drop shipping | Consolidated container shipping supported to 50+ countries |
To order, tell us the variant (3 A dry-contact K1RH3A, 16 A K1H16A, or 25 A on request), the number of units and your destination port. Contact our sales team with your load list, or message us on WhatsApp for a same-day reply. For the full controller lineup, browse the thermostats and controls category page, and see real installations across homes, offices and hotels in our applications gallery.
Wired vs WiFi — Why Choose the K1?
Not every project needs app control. The K1 deliberately omits WiFi, which removes pairing problems, router dependencies, firmware updates and child-lock bypasses through a phone. The weekly programme runs locally from the moment power is applied, and settings are retained after a power cut — ideal for guest-room heating where a hotel engineer must lock a safe, energy-saving set-point and never have to troubleshoot a disconnected device.
If your customer does want remote control later, the same 86×86 mm wall box fits the K1M WiFi smart thermostat with app scheduling and antifreeze mode, so the wall-plate and wiring stay identical while the front panel upgrades. For small retrofit jobs where no new mains cable can be run, the RF wireless thermostat for gas boilers and water underfloor heating removes the need for wiring between room and boiler entirely.
When paired with SunAura heating film, 160 W/m² mats or double-conductor heating cables, the K1 ships as one factory-matched package: we pre-set the temperature range, include the floor sensor where required, and supply insulation, edge tape and installation accessories under a single warranty. More ordering questions are answered on the thermostat FAQ page.
Distributor & Project Pricing
Heating installers, hotel procurement teams and regional distributors work with SunAura on volume-tiered wholesale pricing that rewards repeat orders across the K1 wired range. Prices are quoted EXW or FOB Qingdao depending on your freight preference, with bulk discounts applied automatically once your monthly or quarterly volume crosses the agreed threshold. MOQ is set per variant (3 A dry-contact, 16 A, 25 A on request) and depends on whether you are ordering stock SKUs or a private-label production run; we are happy to quote a trial order first so you can validate the build quality and packaging before scaling up.
For one-off building projects — a hotel floor, an apartment block, a clinic or a chain of salons — we issue a project-specific quotation that bundles K1 thermostats together with the heating film, mats, cables, insulation and installation kits on a single proforma invoice. OEM/ODM partners can add private-labelling, custom faceplate colours and pre-set weekly programmes into the same PO, and we can hold stock against a rolling forecast. To open a distributor account or request a project quotation, send your annual volume estimate and target markets, or talk to our export engineer on WhatsApp for a direct reply outside office hours.
9. Can the K1 switch a large heating load through an external contactor?
Yes — the 3 A dry-contact version (K1RH3A) is designed exactly for this. Its volt-free relay drives an external contactor or magnetic switch, which in turn carries the heavy current to a large film, mat or cable circuit. This is the standard solution when the connected load exceeds the direct-switching rating of the 16 A / 25 A models, and it keeps the thermostat itself in a low-current, long-life circuit.
10. Is the K1 suitable for hotel and rental properties?
The K1 is one of our most popular choices for hotel guest rooms, long-term rentals and student accommodation. Its child lock prevents guests and tenants from changing the programmed set-point, the white backlight is readable at night without disturbing sleep, and the self-contained wired design removes any WiFi or app troubleshooting on site. We can pre-configure an energy-saving set-back before shipment for procurement tenders.
11. How do I order a wholesale or private-label quantity of K1 thermostats?
Send your enquiry through the contact form or WhatsApp with the variant (3 A / 16 A / 25 A), quantity and destination port. MOQ and pricing depend on model and quantity — we will reply with a same-day quotation including EXW / FOB terms, lead time and available bulk discounts. Free samples are available for evaluation, and OEM/ODM customers can request private-label branding, custom faceplates and tailored packaging.
What heating types does the K1 thermostat switch?
The K1 is a simple wall thermostat for resistive electric heating: heating film, underfloor heating mats and heating cables. It is not designed for gas boilers or wet central heating.
What is the maximum load of the K1?
The internal relay is rated 16 A resistive, suitable for up to about 3600 W of electric heating at mains voltage. For larger arrays, use an external contactor sized by your installer.
Does the K1 need a neutral wire?
Yes, the K1 is a mains-powered line-voltage thermostat and requires both live and neutral conductors in the wall box, plus the switched load output to the heating mat or film.
Is the K1 available for OEM/wholesale?
Yes. SunAura supplies the K1 in bulk to heating installers, distributors and brands. We can custom-print your logo on the fascia and packaging; contact our sales team for wholesale pricing.
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