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Express delivery for Tuesday Available Until 4pm Monday
UK Mainland Only,
3pm cut-off for Highlands and Islands
12 noon for Europe


Express delivery for Tuesday Available Until 4pm Monday
UK Mainland Only,
3pm cut-off for Highlands and Islands
12 noon for Europe

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Siemens RDS110 Smart Thermostat

Brand: Siemens (Landis & Staefa/Gyr)
HCO Code: 07D51
Price: £131.99
Ex VAT: £109.99
Stock: In Stock
   - OR -   
Q: hi there. I am about to purchase the thermostat, but need to ask two questions: 1. can I control both central heating and the boiler in my house from the same thermostat? or do I need two separate thermostats? 2. can I use the app to control the thermostat from outside the house, i.e. through the Internet? thanks

A: Hi 1) You can control both heating and hot water from one thermostat. 2) Yes you can use the app to control it from anywhere you have internet access.
Q: Are there any ongoing costs for the app and will this do hot water and rads, thanks.

A: No. There are no ongoing costs. Yes, it will operate heating and hot water.

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Easy to install, gorgeous looks and market leading functionality.  The new smart thermostat from world-renowned manufacturer Siemens is set to change the way we think about heating.

The Smart Thermostat is different. Different from any other thermostat you know. Its unique features benefit both professional installers and end customers. From easy installation and fast commissioning to being always in touch with its surroundings, it creates perfect places.

Understanding your needs with smartness
The Smart Thermostat has been developed to provide professional control and operation of heating applications. With its clean design it fits perfectly into every interior. It is always in touch with its surroundings thanks to six powerful and accurate sensors: temperature, humidity, light, proximity, presence and organic particle detection. Since all of them are an integral part of the Smart Thermostat, no additional wiring or programming is needed. These sensors allow the Smart Thermostat to be fully autonomous.

Operation with or without app
The Smart Thermostat can be operated either directly on the touchscreen itself or with our highly intuitive Smart Thermostat app. The app enables full control and monitoring of your Smart Thermostat from anywhere and at any time. Key functionalities of the app range from a scheduler, setting different modes (e.g. Away, Home), humidity control and indoor air quality monitoring to the Green Leaf function and much more. This makes control of the Smart Thermostat easy and fast.

Your benefits at a glance
The Smart Thermostat offers a package of strong benefits. It figures out the perfect room climate and guarantees optimized energy consumption in your home. In addition to achieving these goals, the Smart Thermostat gives you many other benefits, proving that it fully understands and satisfies your needs.

Intuitive use and automatic updates
The Smart Thermostat was developed to make handling as easy as possible. This is reflected in the highly intuitive user interface and the display that has been reduced to the essentials. Automatic updates ensure that the Smart Thermostat benefits from the latest features.


Healthy indoor conditions
Using the built-in sensor, the Smart Thermostat displays and controls the humidity. In addition, the built-in indoor air-quality sensor provides pertinent information based on an easy-to-understand color-coded system.

Improving energy efficiency while lowering energy costs
The Smart Thermostat ensures energy-efficient operation by meeting important energy efficiency classes. Thanks to the Green Leaf feature, you can be smart while being green. This, in turn, can motivate you to save even more energy. The Smart Thermostat app is your companion to achieve measurable savings – simply by using its control and access functions.

Perfect room temperature in less than one day
Thanks to its built-in presence sensors and algorithm, the Smart Thermostat creates the perfect room temperature when the room is occupied. It learns the perfect moment to start heating the room within one day instead of the usual days or weeks. The benefits are compelling: energy and cost savings as well as improved indoor comfort.

For installers
The Smart Thermostat is made for the professional installation market. It is designed for product replacement as well as for new construction projects. Find out how easy and fast it is to install and commission the Smart Thermostat.

During commissioning, internet access is not always available. For this reason, the Smart Thermostat uses a unique point-to-point concept which doesn't require internet connection. Only one product is required during commissioning, eliminating the need for a gateway or router. In addition, the Smart Thermostat can be commissioned directly via its hardware menu. A navigation wizard will guide you step-by-step through this process, making it efficient and easy.

The Smart Thermostat offers a unique two-step commissioning process. The advantage: Installation can be completed during construction while the actual setup can be performed later. In addition, the user interface – among the easiest and most intuitive on the market – makes the installation process even faster. As a result, fewer users need support, giving you more time to focus on new projects.

NOTE: Not suitable for replacing 2-wire thermostats.

David | 1 reviews

Before you purchase this product, please be aware that it has to be mains 220v powered! Nowhere was this made clear in the supplied description. It is not suitable as a replacement thermostat for any battery operated thermostat using a two wire only system. The Siemens installation video shows the removal of a two wire thermostat! Suddenly an extra wire (assume a neutral) is introduced to operate the thermostat. If you would like to use the other features, an extra relay is included for dehumidifier operation, you will need to wire it directly to the thermostat. If you would like to avail of the outdoor temperature display, you will need to wire the sensor directly to the thermostat. The same is true if you wish to add a room sensor from a different area.

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Heating Controls Online is rated 4.90 stars by Reviews.co.uk based on 2607 merchant reviews

4.90 / 5 Rating
2607 Reviews
Found and ordered the part online. Delivery was excellent and trackable. Would definitely recommend
Great price, fast delivery, fixed the problem - excellent service
Excellent service, programmer received 2 days after ordering.