1. The actuator has the characteristics of small size, high torque and long service life. 2. It adopts bidirectional control and can be adjusted according to different requirements. 3. Mirror: round air valve adopts motor, with beautiful and reliable operation, low failure rate, the material of the valve body is mirror, resistant, and has high-grade appearance. 4. 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. 5. HVAC Air Duct Valve / Electric Air Duct Damper / Motorized Damper 125MM 220V 6. Outside diameter: 125mm 7. Rated torque: 1Nm 8. Power consumption: 4VA 9. Air valve angle: 0°, 90° 10. Power: 220VAC 11. Life: 50,000 times 12. Both the valve opening and the valve closing need to be energized, and the actuator automatically shuts off after completing an action. 13. An action time is about 10 seconds. 14. This damper is suitable for controlling the air volume from full flow to shut off. 15. The damper is constructed with polished stainless steel and comes with aluminum valve plate. 16. It can work with thermostat, open and close automatically. 17. Please note: the physical product may have slight color difference or difference, which does not affect the use, please do not mind, thank you! 18. Colour: Silver 19. Material: Stainless steel 20. Package Contents: 1 * electric damper 21. Only the above package content, other products are not included. 22. 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.