• Original Xiaomi smart door and windows sensor for daily security
• Open the Door: The light and the ring for you when you
• Push the Door: The light automatically turn on
• Away From Home Modes: If someone broke into, the bell will remind and taking video
• Intelligent Sensors: Open the window let fresh air into room
• Small size, easy to install
Notes: This item must match the xiaomi multifunctional gateway to use.