説明
Most heating bills are not caused by a boiler that works badly. They are caused by a boiler that works while nobody is home. A programmable thermostat is the cheapest intervention available for that problem, and it does not require a new boiler, new pipework, or a contractor who disappears for three days.
This unit replaces a wall thermostat on a gas boiler system and adds a weekly schedule on top of it. Instead of one setpoint held all day, you define comfort windows, morning and evening, and setback periods while the house is empty or asleep. The savings come from the hours you stop heating an empty room, not from turning the dial down while you are cold in it.
The wiring options are labelled S, W and B, covering the common European and Asian boiler control arrangements, and the unit accepts a wide 95 to 240 volt AC supply so it works on both 220 volt and 110 volt systems without a transformer. Installation is a swap on the existing wall plate rather than a rewire, though we always recommend a qualified installer for anything that touches mains voltage and a gas appliance.
The Wi-Fi variants add remote scheduling: change the programme from a phone when a flight is delayed, or bring the heating forward when you leave work early. The non-Wi-Fi versions keep the same weekly programme, are set on the device, and cost less. Both run the same LCD interface, which is readable without glasses and does not bury the setpoint in a menu.
The honesty clause: this is a thermostat, not a smart-home hub. It controls a boiler, it holds a schedule, and it does that job without demanding an account, a subscription, or a firmware update that changes where the buttons are.
Warmth is not a luxury. Heating an empty house is.
Key Features
- Weekly programmable schedule. Comfort and setback windows by day and hour instead of one fixed setpoint.
- 95 to 240V AC input. Works on 220V and 110V systems without an external transformer.
- Wi-Fi option for remote control. Adjust the programme from a phone on the Wi-Fi variants; the non-Wi-Fi version sets on the device.
- S, W and B wiring variants. Covers the common European and Asian gas boiler control arrangements.
- Backlit LCD interface. Readable setpoint and schedule without digging through menus.
- Gas boiler control. Designed for combi and system boiler demand switching.
- Surface mount replacement. Fits a standard wall thermostat position on the existing wiring.
Technical Specifications
- Supply voltage: 95 to 240V AC
- Application: Gas boiler heating control
- Programme: Weekly programmable schedule
- Connectivity: Wi-Fi on W variants, non-Wi-Fi on S variants
- Display: LCD with backlight
- Wiring options: S, W and B configurations
- Mounting: Wall mounted, surface
- Colour options: Black, white
- Certification: CE
- Stock locations: China, United States, Czech Republic
Where It Belongs
It is the right upgrade for a flat or house with a gas combi boiler and a dumb wall thermostat, where the goal is a schedule rather than full home automation. Landlords fit the non-Wi-Fi version because there is no account to hand over. Owners who travel or work irregular hours choose the Wi-Fi variant so the programme can follow them. It is also a sensible first step before considering smart radiator valves, since the boiler schedule does most of the work.
Frequently Asked Questions
Q: Will it work with my boiler?
A: It is designed for gas boiler demand control and ships in S, W and B wiring variants. Send us a photo of your current thermostat wiring before ordering and we will confirm which variant matches.
Q: Do I need a neutral wire?
A: Wiring requirements depend on the variant and your existing installation. Most replacements reuse the wires already at the wall plate; if there is no neutral at the thermostat position, tell us before ordering and we will advise.
Q: Can I control it from my phone?
A: On the Wi-Fi variants, yes. The non-Wi-Fi versions hold the same weekly programme but are set directly on the device.
Q: Does it work with Alexa or Google Home?
A: We do not claim voice assistant integration for this unit. It provides app control on the Wi-Fi variants and local scheduling on all versions, and we would rather under-promise than have you discover a missing feature after installation.
Q: Is it suitable for underfloor heating?
A: It is built for boiler demand switching rather than underfloor manifold control. For hydronic underfloor systems with actuators you need a different controller.
Q: Can I install it myself?
A: The electrical swap is straightforward on an existing wall plate, but it involves mains voltage and a gas appliance. We recommend a qualified heating engineer, and in many countries regulations require one.
The EastSupplier Promise
Every unit ships from our own inspected stock, not from a blind dropship queue. Orders placed before 3pm local warehouse time leave the same working day, and each parcel carries a tracking number you can follow from dispatch to doorstep. If a unit arrives damaged or does not match this listing, we replace or refund it inside 30 days, no arguments about packaging photos.
- Stock checked daily: the inventory figure on this page is live, not a placeholder.
- Technical answers in English: a human replies to product questions within one business day.
- No surprise fees: the price you see is the price at checkout.






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