Not only does it ensure economical heating operation, but it also makes sure that the room is warmed up on time when you come home from work. The Boost function opens the valve for 5 minutes when activated, providing an immediate feeling of warmth in the room. It features an improved and particularly quiet compact drive. The Boost function accelerates the heating process, making it significantly more cost-effective than slow heating over a longer period. Additionally, the electronic thermostat helps reduce heating costs: up to 7 heating/reduction times can be programmed per day – it only heats when you really need warmth! Easy installation without interfering with the heating system, it fits almost all valves (thread connection M30 x 1.5 mm). Intuitive operation with a large display. New, particularly quiet compact drive - about 30% quieter than the previous model K. Automatic reduction during ventilation. Holiday and party function: maintain a set temperature for a specified period, overriding the programmed switching cycles; after the time has elapsed, the programmed switching cycles automatically apply again. Child safety lock. Frost protection/anti-limescale function. Ready to use immediately due to standard presetting. Battery life: approximately 3 years.