Description
Heatmiser DS1 Manual Dial Thermostat – 230V Wired Room Thermostat
The Heatmiser DS1 Manual Dial Thermostat is a simple and reliable 230V wired room thermostat designed for temperature control in compatible central heating and wet underfloor heating systems.
Featuring an easy-to-use rotary temperature dial, built-in air temperature sensor and clear LED indicators, the Heatmiser DS1 provides straightforward heating control without complicated programming or smartphone connectivity.
Ideal for homeowners, heating engineers and installers, this manual room thermostat is a practical choice for new heating installations or replacing an existing wired thermostat.
Key Features & Benefits
- Simple Manual Temperature Control – Adjust your room temperature using the easy-to-use rotary dial.
- 230V Wired Thermostat – Mains-powered operation with no batteries required.
- Temperature Range: 5°C–35°C – Flexible room temperature adjustment.
- Power On & Heat On LED Indicators – Easily identify when the thermostat is powered and calling for heat.
- Built-In Air Temperature Sensor – Monitors room temperature for reliable heating control.
- Adjustable Switching Differential – Allows installers to configure the thermostat’s temperature switching behaviour.
- 3A Volt-Free Switching Output – Suitable for compatible heating control circuits.
- Surface-Mounted Design – Convenient wall-mounted installation.
- No WiFi or App Required – Straightforward heating control without additional smart devices.
- Compatible with Separate Heating Programmers – Can be used alongside a suitable external time clock.
Easy-to-Use Manual Heating Control
The Heatmiser DS1 dial thermostat is designed for customers who prefer simple, traditional heating controls.
Turn the dial to select your desired room temperature. The built-in sensor monitors the surrounding air temperature and signals the connected heating system when heat is required.
LED indicators provide a clear visual indication of power and heating demand.
Unlike programmable or smart thermostats, the DS1 does not include built-in heating schedules, WiFi connectivity or smartphone control.
Suitable for Wet Underfloor Heating
The Heatmiser DS1 is suitable for compatible water-based underfloor heating systems when connected to an appropriate wiring centre or heating control circuit.
It can provide individual room temperature control as part of a properly configured underfloor heating installation.
Its simple manual operation makes it a useful option for rooms where advanced scheduling and smart controls are not required.
Central Heating and Boiler Control
The DS1 is also suitable for compatible conventional and combi-boiler heating systems.
It can be used with an external heating programmer to provide timed heating operation, while the thermostat regulates the required room temperature.
This makes it a practical option for replacing a traditional room thermostat in a compatible wired heating installation.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Heatmiser |
| Model | DS1 V2 |
| Product Type | Manual dial room thermostat |
| Power Supply | 230V AC |
| Maximum Switching Current | 3A |
| Switching Output | Volt-free |
| Temperature Range | 5°C–35°C |
| Temperature Sensor | Built-in air sensor |
| Remote Air Sensor | Supported on DS1 V2 |
| Display | Manual dial, no digital display |
| LED Indicators | Power On and Heat On |
| Adjustable Switching Differential | Yes |
| Mounting Type | Surface-mounted |
| Dimensions | 92 × 92 × 26mm |
| Built-in Programmer | No |
| WiFi / App Control | No |
Frequently Asked Questions
Is the Heatmiser DS1 thermostat programmable?
No. The Heatmiser DS1 is a manual dial thermostat. It controls room temperature but does not include built-in daily or weekly heating schedules. A separate heating programmer can be used for timed operation.
Can I use the Heatmiser DS1 with underfloor heating?
Yes. It can be used with compatible wet underfloor heating systems and suitable wiring centres.
Does the Heatmiser DS1 require batteries?
No. The DS1 operates from a 230V AC power supply.
Can I control the Heatmiser DS1 from my phone?
No. The DS1 is a traditional wired room thermostat and does not support WiFi or smartphone app control.
What is the temperature range of the Heatmiser DS1?
The thermostat allows you to set a room temperature between 5°C and 35°C.
Can the Heatmiser DS1 be used with electric underfloor heating?
The DS1 is not designed to switch electric underfloor heating mats directly. Electric underfloor heating requires a suitably rated thermostat with appropriate floor temperature protection.
Why Choose the Heatmiser DS1 Dial Thermostat?
The Heatmiser DS1 Manual Dial Thermostat offers a reliable and uncomplicated way to control room temperature.
With its easy-to-use rotary dial, 230V operation and compatibility with suitable central heating and wet underfloor heating controls, it is an excellent choice for customers who prefer straightforward heating control.
Buy the Heatmiser DS1 Manual Dial Thermostat from The Underfloor Heating Expert, your UK supplier of underfloor heating thermostats, wiring centres and heating controls.





