This actuator is used for opening/closing thermostatic valves on brass manifolds in underfloor heating/cooling systems. The thermoelectric head is controlled by a 220V room thermostat with 2 output points or pulse width modulation. Adapter thread: M 28 x 1.5. Mounting position: – any position (360°). Supply voltage: – 230V AC. Power consumption: – 1W. Protection: Class II, IP54. Ambient temperature: – 0 to +60°C. Control signal: – ON/OFF, compatible with PWM, TPM, TPI. Stroke time: 3.5 minutes for closing or opening. Closing force: – 100 N. Actuation stroke: – 4mm (maximum), with self-adaptation to valve stroke. Current position display: – circular indicator on the upper part, raised = electrically powered. De-energized position: – NC (normally closed) model, valve stem is pressed. Special functions: first-open function, the actuator is delivered in the open position for easy installation. Auxiliary contact: SPST, 2 wires NO, contact engages at 50% of the opening stroke. Housing material/housing color: Polyamide/light grey (RAL 7035). Connection cable: 2 x 0.75 mm² Ho3VV PVC. Cable length: 1m.