2023 Newest Xiaomi Mijia Smart Door & Window Sensor 2 Bluetooth 5.1 Light Detection Opening/Closing Records Overtime Unclosed Reminder ►► Before Order Please Note ・ This sensor needs to be used with Xiaomi Multimode Gateway,it could not work separately. ・ Please do not give negative feedback before contact,it just like our life. (*^ω^*) ►► Details: - Opening and closing records - Mobile phone synchronous push - Time out not closed reminder - New light sensor - Access Xiaomi Al speaker voice broadcast(Chinese) ►► Specification: Brand: Xiaomi Name: Door & Window Sensor 2 Size: 34*32.7*14.5mm Wireless Protocol: bluetooth 5.1 BLE Battery: CR2032(Built-in) Working Temperature: -10℃-50℃ Working Humidity: 0%-95%RH ►► Package Included: 1 x Xiaomi Mijia Smart Door & Window Sensor 2 1 x User Manual ►► Five Star Feedback ・ Last but not least,if you have any question,please contact with us feel free,we are always glad to serve you. ・ If satisfied with our products,kindly leave a 5-star rating and share with your friends. Thank you for your order very much.(*๓´╰╯`๓)