Description If you are looking for a professional and affordable window alarm, then your research is over here. That's because our product can meet your need. Adopted of premium material, it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience. Features -Color:White-Material:ABS-Size:8.20X4.30X2.00cm/3.22X1.69X0.79inStandby time: 5-6 monthsBatteries: 2 x AA (not included)Working temperature: 0-40WiFi type: 2.4GHz 802.11b/g/nStandby time: 5-6 monthsDistance: 45m- The doors and windows are opened unexpectedly, and the mobile app will notify you remotely.- Supports intelligent voice control, display power, alarm management, alarm query.- The sensor and magnet have adhesive on the back to ensure the surface is clean and dry, and can be attached to any doors and windows.- Multi-scene use, such as garage door, skylight, safe, cabinet, freezer door or kitchen drawer.- Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience.Packing list: 1 x window sensor