Air conditioning is one of the most common equipment in life to adjust the temperature difference between indoor and outdoor, generally driven by electricity. The nature of thermal power is carbon emissions, so energy-saving products emerge at the right moment, among which floor heating with heat source water is the most direct effect and widely used. Air conditioning with its can be in a short time of rapid refrigeration or heating, favored by the majority of users, but it has more energy consumption, occupying area, difficult maintenance and other shortcomings. Floor heating has many advantages, such as health care function, comfortable health, economic energy saving, good thermal stability and long service life, but it also has the most direct disadvantages, the heating speed is slow, can not make the room quickly heat up in a short time. Based on the advantages and disadvantages of air conditioning and floor heating, China's thermostat manufacturers, represented by E-TOP, designed a dual-use temperature controller of air conditioning and floor heating, which has made relative optimization in temperature regulation and energy saving. The thermostat has undergone three updates, the first generation is electrical, the second generation is electronic, and the third generation is intelligent. The so-called intelligent temperature controller is the application of new control model and NUMERICAL control chip. E-top adopts HI67F489 as the main control chip, and customized a special code breaking screen for supporting use. Through software programming, the operation of the temperature controller is more simple and convenient, which is convenient for users to operate better. However, the power consumption of the central air-conditioning system in high-grade buildings generally accounts for 40% to 60% of the total power consumption of the entire building. For the consideration of energy saving of air conditioning system, it is very important to design scientific and reasonable temperature controller and temperature control algorithm. In winter, the number of people using air conditioning is much higher than that using floor heating. However, under the same circumstances, the power consumption of geothermal floor heating is less than that of air conditioning. At present, or use air conditioning to undertake temperature regulation entirely, or air conditioning and floor warming are to undertake the job separately, dual-use temperature controller still did not use commonly on the market.   1 Function Description At present, the temperature controller launched by E-TOP integrates air conditioning and floor heating temperature control, with a total of 5 working modes, including air conditioning cooling mode, air conditioning heating mode, floor heating mode, air conditioning combined heating mode and sleep mode. These five modes meet the needs of different seasons, while also considering a series of practical issues such as power consumption and power saving. There are multiple electric routes between the central air conditioner and the temperature controller. For the convenience of installation and simple wiring, the connection between the temperature controller and the fan is cancelled, and 315 wireless communication is used to control the high, medium and low wind speed. We use a five-stop valve to control the flow of hot and cold water, by changing the size of the gear to achieve temperature control requirements. Dual-use temperature controller has a wide application prospect in hot spring clubs, hotels and other places.   2 Hardware Design We design the relevant circuit for the main control chip based on HT67F489 chip of Hetai. This temperature controller is divided into two circuit boards, one is the power supply circuit board and the other is the temperature control panel. Among them, the main function of the power supply circuit board is to convert the voltage of 230V to 3.3V, and the voltage of 3.3V is used to power the temperature control panel. In the power supply circuit, we use LN5RO4D chip. LN5RO4D is a standard PwM controller integrated circuit, which can be easily applied to various low-power power adapters. It has few peripheral devices and a variety of internal protection circuits, which are simple. A transformer was used to convert 20V to 12V, followed by an AMS1117 high efficiency linear regulator, which stabilized the output voltage to 3.3V. The temperature control panel consists of the main control chip H67F489, code break screen, temperature sensor, 315 wireless communication module, etc., which is an important part of the function of the temperature controller. The main component of the temperature sensor is thermistor, the use of negative temperature coefficient thermistor, that is, the resistance value decreases when the temperature rises. The code breaking screen for the air conditioner and floor heating thermostat is specially customized. A total of 20 pins are designed to display 122 picture blocks, each picture block can be displayed separately, and the content displayed at the same time is simple and clear.   3 Software Design The program is the soul of the thermostat, is an important basis for the thermostat to achieve various functions. Thermostat is the most important key procedure, namely press different keys to achieve the corresponding function, from left to right are the key mode of power supply selection key, timing open timing off trigger key, wind speed selection key, increment key, decrement key. The corresponding parameters and contents can be displayed on the screen only after the coding screen is programmed accordingly. The room temperature display is realized by AD conversion program. Through the timing program to achieve the function of timing on or off; Through 315 wireless communication program to control the wind speed of the fan; Through the serial port command to control the gear of the five-grade valve, so as to control the flow, to achieve the role of temperature regulation. Therefore, software design is very important in dual - use temperature controller   4 Energy consumption In summer, directly choose air conditioning refrigeration mode, so that the indoor temperature reaches the set value, and ordinary central air conditioning has no difference. In winter, the combined heating mode of air conditioning and floor heating can be selected. When the indoor temperature reaches 25℃, the mode of floor heating can be changed at this time. On the one hand, the heating effect of air conditioning is fast and the heating effect of floor heating is slow. If you want to heat up quickly in a short time, the two modes can be realized at the same time. On the other hand, due to power consumption, the power consumption of air conditioning is greater than that of floor heating, so when the room temperature reaches human comfort, the air conditioning is immediately turned off. This kind of thermostat can accomplish this function very well. The comparison of energy consumption should be based on the same temperature regulation effect. In the case of the same temperature control, the energy consumption of floor heating is lower than that of air conditioning. At the same time, floor heating is in line with the human needs of "warm feet and cool top" in Traditional Chinese medicine, which will give people a comfortable feeling of warm feet and cool head. It is conducive to promoting human metabolism, improving blood circulation, and has a regulatory effect on cardiovascular diseases: it has prevention and treatment effects on arthritis, old cold legs and back pain in the elderly. The heat in floor heating process is mainly radiation heat transfer, indoor temperature distribution is more reasonable. Under the same comfortable conditions, the indoor setting temperature is 2℃ lower than that of the traditional convection heating indoor setting temperature, and the heat consumption can be saved by about 15%.  

This room thermostat is only used in heating systems to maintain the selected room temperature. If the room temperature falls below the selected setpoint, the heating contact will open. If the room temperature exceeds the selected setpoint, the heating contact will close. Temperature control is based on internal sensor. An external sensor (SENSOR 10K ) can be connected without any additional external power supply. Compatibles with both NC and NO actuators, such as Gas boiler or oil buners Mounting, Installation and Commissioning The room thermostat should be located where the air temperature can be sensed as  accurately as possible, without getting adversely affected by direct solar radiation or other heat or refrigeration sources. Mounting height is about 1.5 m above the floor. The unit can be fitted to most commercially available recessed conduit boxes or directly on the wall. Only authorized personnel may open the unit to perform service. The unit must be isolated from the mains supply before opening. When installing the unit, first remove the cover of room thermostat, and then fix the thermostat body to wall. Then make the calibration as below. Use a sensible thermometer with this thermostat, in some atmosphere and be sure about the real temperature of room. Then remove plastic round cover of set point. For example, the room temperature is 20 °C indicated on sensible thermometer. You must turn set point till you hear click voice. Then put the set point cover by matching 20 °C with arrow on cover of room thermostat. The thermostat must be mounted on a flat wall. The local electrical regulations must be complied with. If there are thermostatic radiator valves in the reference room, set them to their fully open position. The diaphragm is filled with environmentally friendly gas. The thermostat housing is made of plastic.

   Specially designed for temperature control of home electric heater and heating panel, plug digital thermostat can read room temperature and setpoint in LCD screen, set efficient programmable mode and smart phone app remote control home appliances. With various socket outlet, it can be used for different countries DE/EU, FR,UK,IT,US. And if you wanna prevent home temperature increasing at a high temperature, adding a external sensor can easily solve uncomfortable temperature heating setting.   Key feature * Plug in design make it easy to install. * Five buttons make it easy to operate. * 7 days programmable * Manual mode, Away mode and programmable Mode Selectable. *  The display shows the room temperature. * Temperature display in degrees Celsius. * With EEPROM * Frost Protection * WIFI controlled (Search “Smart Life” on Google Play or App Store) * DE/EU, FR,UK,IT,US socket type in option * External sensor in option * Frost protection * Open window detection * Child lock    

E-top, an OEM and ODM manufacturer with extensive experience in the thermostats industry, has achieved remarkable success not only through its widespread global sales but also through its unwavering commitment to innovation and alignment with contemporary trends. By continuously developing and introducing thermostats that meet international energy-saving and environmental standards, E-top not only provides global users with more comfortable and convenient home temperature control solutions but also actively promotes the development of global energy conservation, emission reduction, and environmental protection initiatives.   Adhering to International Standards and Spearheading Technological Innovation E-top's thermostats, including digital thermostats, programmable thermostats, and intelligent thermostats, rigorously adhere to international energy-saving standards and environmental requirements. The company stays abreast of the latest policies and technological advancements in Europe and around the world in the fields of heating, energy conservation, emission reduction, and environmental protection. This ensures that its products achieve optimal environmental benefits in all aspects, encompassing design, production, usage, and recycling. For instance, E-top's thermostats consistently meet or exceed ERP energy-saving grade standards, effectively reducing energy consumption.   Environmentally Friendly Materials and Innovative Design In its pursuit of minimizing environmental impact, E-top actively incorporates environmentally friendly materials into product design, striving to reduce the use of non-degradable materials such as plastics. Simultaneously, by optimizing product design and enhancing temperature control precision, E-top ensures maximum energy savings while meeting user comfort requirements. This design philosophy not only reflects E-top's commitment to social responsibility but also garners widespread recognition from the market and users alike.   Striking a Balance Between Intelligence and Convenience E-top's thermostats seamlessly integrate intelligent features, such as remote control and energy consumption monitoring through mobile phone applications. Users can access the thermostat's operating status and energy consumption anytime, anywhere, enabling them to manage their home energy usage more conveniently. This intelligent design not only elevates the user experience but also further promotes the efficient utilization of energy and contributes to energy conservation and emission reduction efforts.   Looking Ahead: Embracing Continuous Innovation Moving forward, E-top will remain steadfast in its corporate philosophy of "innovation, environmental protection, and energy conservation," continuously introducing high-quality thermostats that align with market demands and environmental standards. Concurrently, the company will strengthen communication and collaboration with global partners to jointly promote the green development and technological innovation of the thermostat industry. E-top is confident that in the near future, its exceptional products and services will bring a more comfortable, energy-efficient, and environmentally friendly home living experience to global users.

With the improvement of people's living standards, everyone's awareness of enjoyment is gradually strengthened. Especially in winter and summer, when the house temperature is very high or very low, we will install some heating or cooling equipment, for example, central air conditioning, for this central air conditioning, we need to install a controller in the room to further control the temperature, this is room thermostat.    How should we set and control the room thermostat? Simple mechanical room thermostats with sylphon, with remark anti-frost, 5C--10C--15C--20C--25C--30C, are easy to operate, choose a certain tempearature just as the air conditioner, the room will keep this temperature. LCD programmable room thermostats: 7 days 4 programmable room thermostats. According to your living habits for one week. You can pre-program it for turn on, turn off, raising temperature, constant temperature, etc. For example, as soon as you go to work in the morning, the wall boiler will shut down by itself, you get home at six o 'clock in the afternoon, the boiler will start to run by itself at 5:40, when you walk into the house, it is already 25C room temperature. When you fall asleep, the room temperature automatically jumps to 20C. All these changes are happened due to your presetting. We E-top has been engaged in room thermostat OEM/ODM service since 2009 and we have develop many many room thermostats. Recently, we E-top has sucessfully developped E-ink Lithium Battery Thermostat WT-75: