Feature:1. Alert Message Push: Real time monitoring door and window, door sensor will push instant notification to your smartphone immediately.2. Widely Use: Door window sensors can be affixed to desk drawers, private money boxes, storage bins for important items, refrigerators, etc3. Monitoring Assistant: Door open contact sensor can be your monitoring assistant, protect the intimacy of individuals, create a smart and safe home environment.4. Compact Size: Security alarm door sensor is compact and lightweight, need to stick where, can be used anytime and anywhere.5. Application: Smart door window sensor supports scenario linkage settings, supports for Google Assistant.Specification:Item Type: Door Window SensorMaterial: ABSBattery: CR2032x1 (self-provided)Operating temperature: -10-55Working humidity: 10%-90%RH (non-condensing)Main Function: Intelligent interconnectedWireless Standard: WIFI802.11b/ G/NZigbee802.15.4 versionSupport scene linkage SettingsSupport for google Assistant.Package List:1 xDoor Window Sensor1 x Door Contact1 x User Manual1 x Pin1 x Sticker