Description
Heatmiser Slimline-RF Wireless Programmable Thermostat – White
The Heatmiser Slimline-RF Wireless Thermostat is a battery-powered, programmable room thermostat designed for reliable temperature control in wet underfloor heating and compatible central heating systems.
With wireless 868MHz communication, flexible heating schedules and an easy-to-read backlit display, the Heatmiser Slimline-RF provides convenient heating control without the need to run thermostat cables through your walls.
Ideal for new installations, home renovations and heating system upgrades, this wireless thermostat works with compatible Heatmiser RF receivers, including the UH8-RF wireless wiring centre and RF Switch.
Key Features & Benefits
- Wireless Thermostat – Uses 868MHz radio-frequency communication for convenient heating control.
- Battery Powered – Operates using 2 × AAA batteries, with no mains wiring required at the thermostat.
- Programmable Heating Schedules – Choose between 5/2-day and 7-day programming to suit your routine.
- Four Comfort Levels Per Day – Set different temperatures throughout the day for personalised comfort.
- Large Backlit Display – Clear temperature readings and easy-to-use button controls.
- Optimum Start Technology – Automatically calculates when heating should start to reach your desired temperature at the programmed time.
- Frost Protection – Helps protect your heating system during colder periods.
- Holiday Mode – Adjust heating settings while you’re away from home.
- Temperature Hold Function – Temporarily override your normal heating programme.
- Key Lock Facility – Prevents unwanted changes to thermostat settings.
- Optional Remote Air Sensor – Allows temperature measurement away from the thermostat using a compatible external sensor (sold separately).
Wireless Underfloor Heating Control
The Heatmiser Slimline-RF thermostat is a practical solution for controlling wet underfloor heating without installing a wired thermostat connection.
It communicates wirelessly with a compatible receiver, making it particularly suitable for renovation projects where running additional cables would be inconvenient.
The thermostat can be used for individual heating zones or as part of a multi-zone underfloor heating installation when paired with an appropriate Heatmiser wireless wiring centre.
Compatible Heatmiser Wireless Receivers
The Heatmiser Slimline-RF is compatible with supported Heatmiser wireless heating controls, including:
- Heatmiser UH8-RF Wireless Wiring Centre – For compatible multi-zone wet underfloor heating systems.
- Heatmiser RF Switch Wireless Receiver – For compatible wireless heating and hot water control.
- Heatmiser Boost Repeater – Optional accessory for extending wireless communication coverage.
Important: A compatible wireless receiver is required and is not included with this thermostat-only product.
The Slimline-RF does not connect directly to a standard wired wiring centre.
Flexible Heating Programming
The Heatmiser Slimline-RF offers programmable heating control to help maintain comfortable room temperatures throughout the day.
Choose between:
- 5/2-Day Programming – Separate heating schedules for weekdays and weekends.
- 7-Day Programming – Individual heating schedules for each day.
- Non-Programmable Mode – Manual temperature control.
With up to four comfort levels per day, you can tailor heating operation to your daily routine.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Heatmiser |
| Model | Slimline-RF |
| Colour | White |
| Thermostat Type | Wireless programmable room thermostat |
| Power Supply | 2 × AAA batteries |
| Wireless Frequency | 868MHz |
| Wireless Range | Up to 100m in open space |
| Temperature Range | 5°C–35°C |
| Programming | 5/2-day, 7-day or non-programmable |
| Comfort Levels | 4 per day |
| Display | Backlit LCD |
| Installation | Wall-mounted |
| Compatible Receivers | Supported UH8-RF and RF Switch models |
| Remote Air Sensor | Optional, sold separately |
| Smartphone App Control | No |
Actual wireless range depends on the building layout, walls and other obstructions.
Frequently Asked Questions
Does the Heatmiser Slimline-RF need a receiver?
Yes. The Slimline-RF communicates wirelessly with a compatible Heatmiser RF receiver, such as the UH8-RF wireless wiring centre or RF Switch. The receiver is required to operate the heating system.
Can I control the Slimline-RF from my phone?
No. The Heatmiser Slimline-RF is a wireless RF thermostat, not a Wi-Fi smart thermostat. It does not support smartphone app control through the Heatmiser neoHub.
For smart app control, consider a compatible Heatmiser neoAir thermostat and neoHub.
Is the Heatmiser Slimline-RF suitable for underfloor heating?
Yes. It is suitable for compatible wet underfloor heating systems when paired with the appropriate Heatmiser wireless receiver.
Does the Slimline-RF require mains wiring?
No mains wiring is required at the thermostat itself because it operates using 2 × AAA batteries. However, the compatible wireless receiver must be installed and connected to the heating system.
Can I use a remote temperature sensor?
Yes. The Slimline-RF supports an optional compatible remote air sensor, allowing temperature measurement away from the thermostat.
Why Choose the Heatmiser Slimline-RF?
The Heatmiser Slimline-RF Wireless Programmable Thermostat combines reliable wireless heating control with flexible programming and straightforward operation.
Its battery-powered design makes it an excellent choice for installers and homeowners looking to upgrade or install wet underfloor heating controls without running additional thermostat cables.
Order your Heatmiser Slimline-RF Wireless Thermostat from The Underfloor Heating Expert, your UK supplier of underfloor heating thermostats, wiring centres and heating controls.
