[ Safety protection]Safety isolation protection circuit design, don't worry about burning down due to excessive current, it is than other products of the same type. [ No gateway required ]You do not need to purchase a Hub for this device, which is connected to 's WiFi. But a strong WiFi signal is necessary for this device, please try connecting your phone to the sender. The WiFi next to the motivation, if it works, the device work, otherwise please look for a WiFi signal repeater. Connect to faster with WiFi Bluetooth dual mode. Connecting to is twice faster than only WiFi [ APP Remote Control ] Control devices anytime and anywhere through mobile apps. [ Voice control ]Conjunction with , Home, Yandex, and Tmall Genie. Make your garage door intelligent, allowing you to open or close it even when you are not on site. [ APP Remote Control ] Control devices anytime and anywhere through mobile apps. [ History ] You can view the history of the garage door switch [ Offline Function ]When the device is offline, the app remind the device to be offline after 30 minutes [ Home Sharing Function ] Create a Smart Home with Your Family [ Set timing ] Turn on and off the connected device at the specified time. [ Sharing function ] Share with family for common control Description: Voltage: 100-240V AC, 50/60Hz Rated voltage: AC 100-240V Shell material: PC fireproof and flame retardant Working temperature: -10~45 ℃ Power Less than 20dBm Specifications: A: Wifi Colour:White Material:Plastic Package Contents: 1x Smart Curtain Switch Module Only the above package content, other products are not included. 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.