The actuator has the characteristics of small size, high torque and long service life.It adopts bidirectional control and can be according to different requirements.Mirror: round air valve adopts high quality motor, beautiful and reliable operation, low failure rate, the material of the valve body is made of mirror, resistance, high-grade appearance.Can be equipped with a temperature controller: can be used with a series of thermostats, automatic switch, so that the controlled environment is effectively controlled, so that energy-saving comfort and no noise.HVAC Air Duct Valve / Electric Air Duct Damper / Motorized Damper 125MM 220VOutside diameter:125mmRated torque:1NmPower consumption: 4VAAir valve angle:0,90Power:220VACLife: 50,000 timesBoth the valve opening and the valve closing need to be energized, and the actuator automatically shut off after completing an action.An action time is about 10 seconds.This damper is suitable for controlling the air volume from full flow to shut off.The damper is constructed with polished stainless steel and come with aluminum valve plate.It can work with thermostat, open and close automatically.Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Colour:SilverMaterial:Stainless steelPackage Contents:1 * electric damperOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.