Actuator for radiators, heating circuit manifolds or individual heating circuits, Operating voltage 230 V AC, For opening and closing valves in heating, air conditioning and ventilation technology, Actuation is via a room temperature controller with two-point output or pulse width modulation, Inrush current: < 550 mA for max. 100 ms, Dimensions: 48.4 x 44.3 x 52.2 mm, "First open function" for easy installation and heating commissioning, plug-in installation on valve adapter for the most common valve bases and heating circuit manifolds, valve adapter not included in the scope of delivery, de-energised-closed (valve remains closed when de-energised), 100% protection against actuator damage caused by leaking valves, functionleaking valves, function and adjustment check, can be installed vertically, horizontally or "overhead", In the case of "overhead" installation, special circumstances (e.g. dirty water) can reduce service life.(e.g. dirty water) can reduce the service life, "overvoltage protection",