The HERZ 1935599 Thermostatic Control Element D is designed for accurate room temperature regulation, particularly in situations where direct valve mounting is not feasible. It features a remote sensor with a 5-meter capillary tube, allowing the sensor to be positioned optimally within the room while the thermostatic head is mounted on the valve. This genuine HERZ component includes a zero setting and frost protection function, ensuring optimal heating control and preventing pipe freezing. It is compatible with all HERZ thermostatic valves equipped with an M 28 x 1.5 connection thread.