Features: [Compatibility] Compatible with most digital locks that have a motor and a driver board with DC12V power supply. Compatible with Amazon Echo, Echo Dot, Amazon Tap. [Easy Installation] The installation is a 5-minute thing, after that, you can use your smart phone to open your door from anywhere. Installation instructions included. [APP Control] You can add the device to the APP eWeLink in order to remotely open your door, available on both Android and iOS. [Multi-function] Timing Schedules + Device Sharing + History Record + Works with Google Home, Google Nest + Works with IFTTT. [Note] The device can not connect to 5G-WiFi/mesh WiFi/WiFi hue/WiFi bridge, only 2.4G-WiFi is supported. Specifications: Operating Voltage: 12V DC LED: 1 LED (indicate working mode, wifi status) Wireless Standard: 2.4GHz, 802.11 b/g/n Mobile App: EWeLink on Android/IOS Application: Compatible with most electronic gate locks that have a motor and a driver board with DC12V power supply Operating Temperature: -40 degrees to +70 degrees Operating Humidity 40% ~ 80% RH State of Assembly: Unassembled Kit Model Number: Wifi Switch Wireless Module Compatibility: All Compatible Camera Equipped: No Color: green Material: PCB Package Contents: 1 * Smart Switch 1 * Antenna 1 * adhesive 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.