Motorized Air Damper Valve Air Damper Drive Air Volume Control Valve Electric Actuator Controller With Regulator ,Durable Materia

Manual with electric function: 1, electric open, electric off. 2. Press the button to turn it on or off manually.You may also like Preston PST 1T 2T 3T Load Cell Tension Pressure Weighing Sensor Is Used For Mixing Plant Equipment.