Smart Quiet MotorThe latest silent motor in 2022, the volume within one meter is 1.81". Outside Mount:order width = window frame width + 4"6, order length=window frame length + 4"6. Material & Basic PropertiesMotorized cellular shades are thickened and encrypted, durable, faderesistant, antiwarping, antiscratch, moistureproof, waterproof, heatinsulating, flameretardant, oilresistant, easy to use, clean and not easy to discolor. Suitable for office, workshop, bathroom, kitchen and business area, reduce noise and Insulation. Interactive FunctionWith the help of smart bridge or USB converter, you can control the smart blinds through smart voice assistant(such as google assistant or Alex) and Tuya app. For example, in Tuya app, Add A and B motorized blinds inside group C. By controlling group C, the purpose of controlling A&B motorized blinds can be achieved.