Tuya Smart WiFi Door Sensor Smart Home Open Close Detector Smartlife App Control Notification Compatible with Alexa Google Home Features: 1.APP remote controlRemotely set the arm and disarm at any time through the mobile phone APP. 2. One-click armingYou can set one-click arming, which is more convenient to use. 3. Voice controlUsed with Alexa and Google Home, you can check whether the doors and windows are open or closed. 4. Sharing functionShare with family members and control together. 5.Offline functionWhen the device is offline, the APP will remind the device to be offline after 30 minutes. 6. Low battery reminder functionThe product uses 2 AAA batteries (not included). When the battery is low, the phone will remind you to replace the battery. Specification: Name: Smart Door Magnetic Sensor Material: ABS Power supply: 2 * AAA batteries (not included) Wireless network type: 2.4GHZ 802.11b/g/n APP: Compatible with Tuya/Smart Life app Working temperature: -10-50 Size: 70*20*23mm Color: White,Black Packing included: 1 * set of Smart Door Magnetic Sensor Note: 1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.