EWelink SONOFF Zigbee Wireless Contact Door and Window Sensor for Smart Home Automation Compatible with Hubitat and Alexa

• [Notes]A Build-in Zigbee Hub is Required and sold separately. Requires a secured 2. 4 gigahertz WiFi network connection. Zigbee hub required.(Compatible with Echo (4th generation), Echo Plus (1st generation and 2nd generation), Echo Show 10 (2nd generation and 3rd generation), Echo Studio, Eero 6, Eero Pro 6, Home Assistant, SmartThings 2015/2018, Aeotec, Hubitat)
• [Home Automation]Can customize Alexa messages through routines to control lights or play personalized messages when the door/window sensor detects opening or closing. You can set messages like "Welcome home" for a more intelligent and personalized smart home experience.
• [Expandability] Zigbee door/window sensor supports system expansion. You can easily add additional door/window sensors or other Zigbee devices to create a complete smart home security system, providing comprehensive monitoring and protection.
• [Zigbee Technology with Low-power CR2030 Battery] Zigbee door/window sensor utilizes Zigbee technology and is equipped with an integrated low-power CR2030 battery. This ensures stable and reliable wireless communication while extending the battery life for prolonged usage.
• [Convenient and Flexible Installation] Zigbee door/window sensor uses a wireless solution for easy and flexible installation. Enter the configuration mode by using a metal pin to press the reset hole on the back of the device and have compatible Echo devices automatically discover the sensor with the command "Alexa, discover devices."