Polytherm Clip-On Servomotor Floor Heating Actuator The Servomotor actuator from Polytherm is an ideal actuator for those with underfloor heating systems. This actuator is normally closed, noiseless and maintenance-free. This Actuator is Patented 100% protection against leaky valves meaning that it will not leak if installed properly. There is a All around function indicator to show when it is closed and has a high functional safety and a long expected service life. The power consumption of this unit is low and comes in 230 volts. This Actuator is easily installed and the adaption of the actuator can be checked via the valve. Main Features: Easy to Install Low Power Consumption Noiseless Maintenance Free Technical Specifications: Input: 230v Normally open or Normally closed?: Normally Closed Output: 1 Watt Storage Temperature: -25o to 60o 1 Year Guarantee Included