Features: - Heavy-duty super quiet smart WiFi motorized curtain motor work with mobile Apps. - APP control/Voice control/Remote control. - Open and close via smartphone, tablet, remote control, or voice commands from App. - For Tmall Genie, Baidu Xiaodu, alexa, google home, IFTTT，etc. - Make the tradition smart, electric opening and closing, and open a new daily life. - Multiple control methods，not limited by the scene，a variety of product combinations to solve different environmental requirements. Specifications: Rated torque1.2Nm; Rated voltage; AC100V~240V 50Hz/60Hz; Protection level; IP20 Rated power; 40W; Total length; 2.2M（Suitable for under 2.16M）; 3.2M（Suitable for 2.16M-3.16M）; 4.2M（Suitable for 3.16M-4.16M）; Note: 1. Please allow 1-3cm error due to manual measurement and make sure you do not Mixering. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Please understand, thank you Package Included: 1 x Smart Curtain Kit（Curtains not included; 1 x Set of parts; 1 x User Manual; 1 x Remote control