Product: FRITZ!DECT 302 Version: 5.31 Language: Dutch, English, French, German, Italian, Polish, Spanish Release date: 10.10.2025 **Range of functions:** - **Change** When operation on the device is locked, the boost and antifreeze function can be enabled only by pushing and holding the button down - **Improved** Power consumption was optimized ------------------------------------------------------------ Information on older updates ------------------------------------------------------------ **News and improvements with update 5.29:** - **NEW** Setting of duration for antifreeze protection expanded to 24 hours - **NEW** Boost and antifreeze function can be used during holidays, summer mode, and with active operation lock - **Fixed** Adaptive heating did not start under certain circumstances **News and improvements with update 5.26:** - **Fixed** Frequent changes of target temperature by external applications led to faulty temperature control **News and improvements with update 5.25:** - **NEW** FRITZ!DECT 302 was renamed to FRITZ!Smart Thermo 302 - **NEW** The temperature settings for the radiator control can be restricted to a lowest and highest temperature (FRITZ!OS 7.90 or later) - **NEW** International version in Dutch, English, French, German, Italian, Polish, and Spanish (language can be configured in FRITZ!Box user interface) - **Improved** Power consumption optimized through intelligent detection of required valve force - **Fixed** The antifreeze function triggered by an external window sensor had no effect when the radiator control was operated manually at the same time - **Fixed** In error state E1, the thermostat plunger of the radiator control was extended so far that it could possibly fall out of the housing