[ Safety protection]Safety isolation protection circuit design, don't worry about burning down due to excessive peak current, it is safer 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 the house'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 will work, otherwise please look for a WiFi signal repeater. Connect to the network faster with WiFi Bluetooth dual mode. Connecting to the network is twice faster than only WiFi [ APP Remote Control ] Control devices anytime and anywhere through mobile apps. [ Voice control ]Conjunction with Amazon Echo, Google 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 will 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 About Zigbee: You need to connect to a zigbee gateway to use, you can connect an additional RF module and then use a remote control to control it. Other functions are basically the same as WiFi functions. 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: B: Zigbee Colour:White Material:Plastic Packa