You are looking at an underfloor heating actuator from Ambiente. These all work perfectly and have had pretty light use.
Underfloor Heating Actuator 230V, Underfloor Heating Actuators Thermoelectric, AC230V Normally Closed M30x1.5mm Heating Manifold Floor Electric Thermal Actuator for Beulco Cronatherm Wärmer System
Cafopgrill Temperature Controller Underfloor Heating, Floor Heating Thermostat 16A 230V Underfloor Heating Sensor Temperature Controller
Heatmiser UH8-8 Zone 230v Underfloor Heating Wiring Centre
UFH 8 Way 230v Underfloor Heating Wiring Centre
Wengart 230V Underfloor Heating Actuator WGS03, M30 x 1.5mm Thermal Electric Manifold Head, Normally Closed (NC) 2-Wire Replacement, Visible Status Indicator, IP54, 100N
Wengart 230V Underfloor Heating Actuator WG03, M30 x 1.5mm Thermal Electric Actuator for Manifold, Normally Closed 2-Wire with Side Stroke Indicator, Silent Energy-Efficient Replacement, IP54
