WiFi Door Window Sensor Detector: Wireless Security Alarm Door Sensor, Tuya Door Open Contact Sensor, Compatible with Alexa,Google Home,Siri, Smart Door Sensors for Home Business Security (1 Pack)
- ... included), working time can last for one year without to replace the battery. When the battery is running low, it will automatically push messages through APP to remind you to change battery, never worry about running out of battery..
- UNIVERSAL COMPATIBILITY & QUALITY GUARANTEE: Install the alarm sensor not only on front doors or windows, but also on garage doors, liquor cabinets, front gate, safety deposit box, pet doors and more. And we will offer you a replacement or refund if you have any problems with your door open alert wireless door sensor..