This door sensor is solid and sturdy, which can withstand use. Features the plastic material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This door sensor will make your home keep safe. Features -Color:White -Material:Plastic -Size:7.00X2.50X2.00cm/2.75X0.98X0.79in -Size:4.40X1.50X1.00cm/1.73X0.59X0.39in -Input voltage: DC3V LR03 -Static current: <=35uA -Alarm current: <=135mA -Low voltage: <=2.4V -WiFi: 802.11 /n -Magnetic control distance: <=20mm -Light range: 0~10000Lux -Operating temperature: - centigrade~+50 degree centigrade -Working humidity: Max 95%RH -The product is a door and window alarm sensor designed for home use. -It serves as a reminder when doors or are opened or closed. with its independent design, it functions as an alarm system. -The device offers a variety of sound options, providing users with various alerts. -It ensures the safety and security of homes by acting as a magnetic theft alarm, alerting homeowners of any unauthorized entry. -Chic in look, simple in design and practical in use, give you a pleasant using experience. Package list: 3 x set of sensor