Introduction: The FMK-1 actuator can be used with electrical on/off-controls to activate several types of valves, the actuator is made for either 24V or 230V supply in normally closed. Application: For the on/off control of water flow in water-based floor heating systems as zone valve used in Commercial buildings, Residential building, Light industrial building etc. technical data: Voltage: AC210V-230V (AC110V / AC24V available) Power consumption: 6W Force: 150N Stroke: 3mm Running time: 6s Ambient temperature: -5^50 Material: anti-flammable ABS shell, stainless steel plate Protective housing: IP20 Mounting position: upright up to 85° Measurement: 93*55*73(mm) features: It equips a synchronous motor and gear mechanism Reliable longtime operation Maintenance-free design No mounting tools required LED position indicator on actuator Single signal line for all kinds of thermostats No power consumption in end position