The 3rd Generation WiFi product has been upgraded to two safer and more convenient power supply methods, and the original power cord has been replaced with a corresponding standard USB adapter plug. 1. The USB 5V power supply method, you only need to connect the USB adapter into the socket to work.2. DC 12-24V power supply mode, you can connect to the garage door motor, convenient for the power supply of the equipment. FAQ It is not important to the brand of the engine. This smart device is connected in parallel with the existing wall push button. The output of this device is impulse dry contact signal. The relay is isolated from the internal circuit of the module. You can hang parallel to the button with any voltage. This gives a short pulse(not a constant pulse) and simulates the pressing button. It can work for opening a sliding gate if you have a one gang wall push button for the gate. This smart device is connected in parallel with the wall push button. You dont need to buy a Hub for this device, this device connects to the WiFi of the House. But a strong WiFi signal is a must for this device, try to connect your phone to WiFi next to the engine, if it works the device will work otherwise look for a WiFi signal repeater. This is a WiFi only device, it doesnt work with any RF 433Mhz or RF 868Mhz remote. This device is not compatible with HomeKit. But you can add Tap-to-Run Scene to Siri Shortcut in smart life app. You can choose EU Standard Plug option if you are in Brazil. Garage door opener controller characteristics: 1Smart your garage Door by phoneRemote and Voice Control, just tapping the Tuya or Smart Life App from anywhere or speaking to your Alexa, Google Assistant . Enable the door open or close even when you are not at the site2Bluetooth pairing functionIn order to ensure the stable connection of the device, we have added the Bluetooth configuration method to increase the stability of the device connection.3Voice Control by Google Home, or Alexa Assistant device 4Multi-type garage doors, easy to useOur garage doors are available in wired and wireless versions, as well as WiFi and ZigBee versions, which can basically cover most garage door environments.5Device security noteBe alerted from App with different notification modes such as garage door open/ close status, overtime notification and overnight notification to remind you close the garage door. Bluetooth pairing function In order to ensure the stable connection of the device, we have added the Bluetooth configuration method to increase the stability of the device connection. Smart your garage Door by phone Remote and Voice Control, just tapping the Tuya or Smart Life App from anywhere or speaking to your Alexa, Google Assistant . Enable the door open or close even when you are not at the site. Stay Safe Be alerted from App with different notification modes such as garage door open/ close status, overtime notification and overnight notification to remind you close the garage door Voice Control Voice Control by Google Home, or Alexa Installation The main working principle is as below Specification Voltage: 100-250VAC, 50/60Hzsensor action distance: below 30mmlength of the sensor cable: 5 metersWireless Protocol: Wi-Fi 2.4 Ghz( don't support 5Ghz Wifi band)APP Name: Smart Life, TuyaVoice Conrol: Google Assistant, Amazon Echo AlexaDimensions:48mm*47mm*22mmColour: WhitePlastic Material: Fireproof ABSCertification: CE, RED, EMC, RoHSProduced by ISO9001:2015 factory: YesPatented Product: Yes Different standard plugs Please select the corresponding standard product according to your needs. User installation display