Feature: 1) Home automation and security: Set schedules via phone or timer so the curtains can still be opened or closed. Increase home security like at home 2) Convenient and easy to operate: Freely control your blinds remotely via remote control, timer, wall switch, phone, Alexa and Google Assistant voice commands, or from your existing home automation system 3) Modern Smart Features: Improve your home curtain system with the latest technology. Wireless home automation with Alexa/Google/Mobile easily integrates into modern smart home systems. 4) Child safety and mobility: heavy curtains, high windows or curtains that are hard to reach. Everything can be controlled. It is safe (wireless) and convenient for children, the elderly or those with limited mobility. 5) Healthy Lifestyle - Set the timer to turn off at night and turn on the light sensor for better sleep and wake up naturally in the sun. Light sensors help save energy by reducing the workload of air conditioning and heating. Specifications: Type: single remote control switch Working voltage: 100-240V Working frequency: 50-60Hz Total load power: 800W Remote control distance: infinite Working temperature: 45 () Scope of application: Electric projection cloth, projection screen, TV projection cloth 3C rated voltage range: 100-240V Specifications: projection voice switch, USB projector linkage trigger, conventional screen switch Start mode: manual, mobile phone, voice control Series: Upper and lower curtain electric curtain switch projection switch panel Hole pitch: 74 Packing list: 1* Electric projection remote control switch Notice: Please allow 1-3mm difference due to manual measurement. Due to different displays and different lighting, pictures may not show the actual color of the item. thanks for your understanding