Wifi Door Sensor Remote Alarm Reminder Alexa Google- Linkage APP Alarm Situation Query Features: Ideal for home security-the receiver works with door and window sensors, making it an anti-theft alarm system and your 24-hour personal protection. Whether at home or at work, you can put the security of the entire house at your fingertips through this app. Powerful DIY function: SmartLife app has built-in zone- and product attribute functions, and has arming, shutdown and home modes. You can give more personalized accessories according to your needs. This doorbell has 10 built-in alarm sounds, and you can customize different music for each door sensor (doorbell or doorbell). Comprehensive- protection: When the doors and windows are opened, the receiver will sound an alarm, and you will receive a mobile phone notification to let you know- at any time that someone breaks- in or your children, the elderly, or your pets- leave the house, anywhere. Scalability-add additional components and accessories at any time. You can add up to 100 wireless detectors or bell buttons. In the future, we will provide more accessories for you to choose from, such as door and window sensors, PIR motion detectors, doorbell buttons, etc. Easy installation (2.4GHz network)-All game accessories have been paired before leaving the factory. The doorbell is built into the Bluetooth module. As long as your router supports a 2.4 GHz network, you can easily connect to the network by turning on your phones Bluetooth and following the instructions. Product Description: Package List: 1x Alarm system