Convenient and economical CO heating with FRITZ!

Traditional thermostats, which control the opening of a valve supplying hot water to a radiator based on the temperature measured by the thermostat itself, are quite an advance over the primitive valves commonly installed in the previous century, which were merely a tap on a pipe. Hence, a quote from a well-known song "the radiator is steaming, they started heating again" has passed into mass culture from those bygone days.
FRITZ Smart Thermostat!DECT 301, however, is a completely new quality. Smart valve connected by radio to FRITZ router!Box, allows incomparably more extensive control, based on many parameters, aimed at both precise setting of comfortable room temperature with an accuracy of 0.5 °C, and significant savings of consumed thermal energy, the cost of which, after all, does not decrease.
Control according to sublime needs
Comfort at any time of the day or night
FRITZ!DECT 301 allows you to set two levels of temperature: a comfortable temperature, required, for example, when you are in the room - during daily activity, and a reduced temperature, for example, at night, when the living room is not actively used, as the household members go to bed at night.

Setting the vacation period
If we already have our plans for the winter holidays specified, we can make the appropriate settings in the infrastructure of the smart home under the sign of FRITZ! Since the house or apartment will be empty, the radiators should only take care that the temperature does not fall below a level that is safe for houseplants, plumbing and other appliances:

Heating season
Another cyclic parameter important for the operation of the thermostat is the start and end of the heating season, which we can specify in the configuration of the. Importantly, even while seemingly asleep, the FRITZ!DECT 301 will occasionally operate the valve to prevent its mechanism from stagnating and becoming overgrown with limescale.
Averaged room temperature
Ordinary thermostats are controlled by a measurement located in the device itself, which is subject to serious error, since it measures the temperature near the radiator, where it is necessarily warmer. FRITZ!The DECT 301 offers at least two solutions to this problem:
- Setting the correction value, relative to the indication of the measurement in the thermostat itself.

For this purpose, it is enough to measure the optimum temperature with an ordinary thermometer in a selected area of the room and take into account the difference from the measurement on the thermostat.
- Set the control of a smart thermostat based on a temperature measurement taken by another smart device, such as a FRITZ plug!DECT 200

Watch out for open windows! High heat loss!
Regardless of the temperature outside, maintaining a healthy atmosphere of freshness in the apartment is essential. It is necessary to open the windows from time to time for this purpose. However, a sudden drop in temperature caused by this can make the heater want to quickly equalize it, consuming excess heat energy. FRITZ!DECT 301 is equipped with an open window detection function that temporarily blocks excessive opening of the valve. This function can also be activated manually using a button on the thermostat.
Templated = comprehensive
If our Smart Home infrastructure consists of several thermostats, we can group them (e.g., several heaters in one room) and manage them together, comprehensively, also using templates.
Convenient management
As with all Smart Home terminals, turning their functions on and off is done automatically, based on a pre-configured schedule, as well as manually, using the appropriate buttons on the terminals, external control buttons (FRITZ!DECT 400 and/or FRITZ!DECT 440, via the router's web configurator, but most conveniently via the FRITZ app! Smart Home for Android and iOS.


