Fangrui Product Details 1. Tuya Wifi Door Magnetic Sensor Remote Intelligent Linkage Doors Windows Switch Anti-alarm App Reminder Alarm 2. Composite Multi-layer Design 3. Built-in Omnidirectional Antenna 4. High Performance, Low Power Consumption 5. Protocol: Ieee 802.11bgn 6. Material: Abs 7. Working Power Supply: 2 X Aaa 1.5v (battery Not Included) 8. Wireless Type: 2.4ghz (not Support 5g) 9. Shock Resistance: 4.7m, 1.2m, 3.5m, 300k 10. Transmission Distance: 50-200m In Open Area 11. Product List: Door And Window Sensor + Smart Door Sensor Detector 12. Size: 72x45.5x14mm 13. Weight: 50g 14. - For Alexa And For Google Home: 15. Just Use Your Voice To Control Connected Devices Via For Alexa Or For Google Home; It Also Works With Other Smart Life Compatible Smart Devices For Automatic Control; Convenient For You To Detect Your Doors, Windows, Cabinets, Drawers Or Any Where You Want To Be Notified When It Is Opened Or Closed 16. - Enjoy Your Smart Life: 17. When You Leave Home, It Will Push Notification Messages To You When The Doorwindow Is Opened Or Closed, So That You Can Spot Intruders In Time; Moreover, You Can Share The Device With Your Family And Track The History Of Sensor Activities 18. - Easy To Install: 19. No Complicated Installation Tools Are Required; Just A Few Steps To Install The Sensor With Double-sided Tape Or Screws (included), And Download The App Tuya Or Smart Life From Googleplay Or App Store To Add The Device To Detect The Status Of Your Doorswindows