Feature:1. Enhanced Home Security: Protect your home with the door open closed detectors, which use wireless window detectors and door open contact sensors to provide extra security.2. Intelligent Compatibility: With for ZigBee technology supports smart connectivity, and this door and window anti theft sensor can be compatible with your smart home system.3. Tamper Proof Design: Equipped with an anti tamper door magnet, sensitive and fast response, triggering immediate alarms and notifying your smartphone to prevent intrusion.4. Push Alarm Notifications: With the push alarm feature, you'll receive immediate notifications on your smartphone whenever a door or window is opened, allowing you to take swift action.5. Easy Installation and Versatile Application: Simple to install and operate, suitable for various scenarios such as doors and windows.Specification:Item Type: Door Sensor Window SensorMaterial: ABSDetects door, window open, close status and sends notifications to your phoneTamper alarm function with notification when device is removedUSB Power: 5V 1AStandby Current: 10.7uaOperating Temperature: 0C ~ 40C (32F ~ 104F)Operating Humidity: 20% ~ 85%Wireless Frequency: 2.4GHzWireless Protocol: For Zigbee 3.0, IEEE 802.15.4Network Range: Approx. 55m/180ftProduct Dimensions: Main Body: Approx. 82mm x 27mm x 23mm/ 3.2in x 1.06in x 0.91inAuxiliary Machine: Approx. 50mm x 13mm x 16mm/ 1.97in x 0.51in x 0.63inBattery: CR123A Lithium battery x 1.Package List:1 x Main Host1 x Sub Host3 x Screw3 x Screw Accessory1 x User Manual2 x Adhesive Tape1 x Data Cable