Product description
RT51 series thermostat, designed to be used in underfloor heating system, is to control the temperature of indoor room according to the preset temperature values. Simple and elegant design make it perfect for any style of decor. There are four models for option, meeting the requirements of different floor heating systems, electric floor heating or hydronic floor heating system. The product is able to set four time periods in a day: period of waking up, leaving home, back home and sleeping. This helps to tailor a comfort home according to your need and achieve energy saving.
The operation is simple. Many setting interfaces can be entered by pressing one or two designated buttons for 5 seconds.
RT51 WiFi models enable you to control the room temperature anytime and anywhere, and to upgrade the software online.
Features:
Technical data
Voltage: AC220V/AC230V 50Hz
Rated power:<1.5W
Terminal blocks: one terminal can be connected to
2*1.5mm² or 1*2.5mm² wire at most.
Signal terminal: 0.75mm²wire
Temperature range: 5~90℃
Measuring range: -9.5~99.5℃
Protection class: IP20
Ambient temperature: -10~55℃
Selection table
|
Model |
Load |
Function |
|
RT51.13 |
3A |
hydronic heating |
|
RT51.23i |
3A |
hydronic heating Wi-Fi potential free output |
|
RT51.36 |
16A |
electric heating time control external sensor |
|
RT51.36i |
16A |
external sensor time control external sensor Wi-Fi |

| Attribute | Value |
|---|---|
| Model NO. | RT51 |
| Signal Terminal | 0.75mm-Wire |
| Measuring Range | -9.5°C ~ 99.5°C |
| Material | Anti-Flammable PC |
| Feature | Easy Installation |
| Protection Class | IP20 |
| Single Gross Weight | 0.300 Kg |
| Temperature Range | 5°C ~ 90°C |
| Origin | Zhejiang, China |
| Selling Units | Single Item |
| Relay | 3A, 16A |
| Single Package Size | 8.6 x 8.6 x 1.3 cm |
| Design Style | Modern, European |
| Ambient Temperature | 10°C ~ 55°C |
| Heating System | Hydronic, Electric |
| Voltage | 220V, 230V |
| Trademark | Menred |

|
Voltage
|
AC220V/AC230V 50Hz
|
|||
|
Rated power
|
1.5W
|
|||
|
Terminal blocks
|
one terminal can be connected to 2*1.5mm² or 1*2.5mm² wire at most.
|
|||
|
Signal terminal
|
0.75mm²wire
|
|||
|
Temperature range
|
5~90
|
|||
|
Measuring range
|
-9.5~99.5
|
|||
|
Protection class
|
IP20
|
|||
|
Ambient temperature
|
-10~55
|
|||




Since its inception in 1995, Zhejiang Menred Comfort System Co., Ltd., affectionately known as Menred, has firmly established itself as a beacon of innovation and excellence in the global manufacturing industry. Specializing in 'radiant heating and cooling, ventilation, water purification, and smart home' systems, Menred is not only a trusted partner of the National Key Laboratory of 'Future Building' but also proudly serves as a certified factory for Electrolux AB, a leading name in the global appliance arena. At 'MENRED Comfort Home', we have ambitiously evolved from mere temperature control solutions to comprehensive systematic air conditioning systems. Our focus is not just on cost-effective solutions but on pioneering energy efficiency, putting the user's needs at the heart of our product development. Our passion extends to creating sublime comfort home product solutions, spearheading the innovative development of green building equipment, and delving into the engineering application and research of Building Integrated Photovoltaic (BIPV) and energy storage solutions. Within the esteemed Menred group, we proudly house 4 National High-tech Enterprises alongside 3 enterprises recognized for High-quality Technological Advancement. These enterprises have not only been conferred with the prestigious national title of Technologically Advanced Little Giant' but also have been distinguished as Service Oriented Manufacturing Demonstration Enterprises, signifying our commitment to excellence and innovation.



