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Brand Name: Refoss

Communication method: WI-FI

Origin: Mainland China

Model Number: MTS200

Certification: CE

Certification: FCC

Certification: RoHS

Refoss HomeKit Wi-Fi Smart Thermostat for Boiler/Water Underfloor Heating System Touch Screen For Siri Alexa Google Assistant

1.【Easy to Use Smart Thermostat】Without any complicated operation, it takes ten minutes to install WiFi thermostat following the installation video and then you can control heating remotely using the free app "Refoss app", or voice control compatible with Apple HomeKit Siri, Amazon Alexa(echo, echo dot), Google Assistant(home, mini), or just simple Manual touch screen control. 2.4Ghz WiFi only. No hub is required.

2.【Set Automatic Heating Schedule for 30%-Energy Saving】Set Alexa heating control on a seven-day schedule so that the heating turns on and adjusts the temperature automatically when you are at home and turns off automatically when you go out as scheduled.

3.【Dual Sensing System for Precise Temperature Sensing】In order to sense room temperature more accurately for maximum home comfort, we use an internal sensor to sense air temperature and an external sensor wire to sense floor temperature as needed. (external sensing needs to install sensor wire). Accuracy: ±0.5°C.

4.【More Useful Features】Many smart home control functions: outdoor temperature statistics, frost function, child lock, adjustable screen brightness, floor overheating protection, and so on.

5.【24 Months After Sales】With ten years of manufacturing experience in smart devices, Refoss is committed to providing the best WiFi smart thermostat and constantly improving our smart room thermostat based on market feedback. So if you encounter any problems, please let us know immediately!

6.【Note: Only for Boiler/Water Underfloor Heating System】 Refoss smart thermostat is suitable for gas/electric/water boilers, as well as water underfloor heating. Output voltage: 100-250V. Output current: 3A.

7.【Useful Additional Features】 ❄️ The summer mode is used for cooling in warm seasons and requires compatible refrigeration systems, such as air air heat pump systems. In the hot summer, using a programmable heating thermostat in the cooling mode helps to maintain a cool and comfortable indoor environment. In addition, useful features such as child locking, temperature calibration, antifreeze, and screen brightness adjustment are also provided.


1. 【LED Touch Display】Pure white LED backlight, more energy saving than LCD screen (energy consumption ratio is 1:10). Covered by elegant glass panel,minimalist design that fits any decoration style.
2. 【Accurate Temperature】Integrated and external dual temperature sensor system,better temperature perception,0.5℃ temperature accuracy.
3. 【Manual/ Auto Model】Free to choose manual mode or auto mode for different purposes.
4. 【Children Lock】Default mode,prevent children from operating by mistake.
5. 【Weekly Programmable】The thermostat supports different temperature setting accordingly with 6 time-modes daily.
6. 【Memory Function】No need to worry about power failure, data memory when power is off.
7. 【Open Window Detection Function】Automatically stop heating when the open window is detected. Save more on your heating bill.


1. Input: Water/Gas Boiler System:100-250V~, 50/60Hz,3A
2. Output: Electric Underfloor Heating System:16A maximum load;Water/Gas Boiler System:3A maximum load
3. Set Point Range: 5~35℃
4. Accuracy: ±0.5 ℃
5. Dimensions: 86 x 86 x 42 mm
6. Power Counsumption: < 1 Watt
7. Compatible with most electric underfloor heating systems. Control from anywhere with internet anytime. Works with Apple HomeKit, Amazon Alexa, Google Assistant。
8. Save your heating cost with a 7x24 hours smart graphic schedule. Never worry about arriving home with a cold room, or leaving the house with the system heating.

Why Choose Refoss

CE Certification
2-year Waranty
Lifelong After-sales

Installation Instructions

Voice Control to Free Hands

With Siri,Alexa,and Google,just ask and free your hands

Remote Control

Control via the free app No Hub Required

Easy to set

Setting 7/24 Schedule for Automatic Heating

Works with Apple Home

Open Window Detection

Dual-Sensing System for Precise Temperature

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