WiFi Door Window Sensor Detector: Wireless Security Alarm Door Sensor, Tuya Door Open Contact Sensor, Compatible with Alexa,Google Home,Siri, Smart

APP ALERTS ON YOUR PHONE: Wifi door sensor, Tuya Smart or Smart Life APP control. No hub required and No fees charge. When door/window is opened

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WiFi and GSM 17-Piece kit, Wireless Home Security Alarm System, Door/Window Sensor Entry Sensors (x10) with Smart Life and Tuya App Alert, 24/7 Monitoring Works with Google Assistant and Alexa - Yahoo

WiFi Door Window Sensor: Smart Contact Sensor with App Alerts, Door Open Detector Compatible with Alexa Google Assistant, Entry Detector Sensor for Home Security and Home Automation (4-Pack)

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【Door Sensor with Batteries】The wireless smart door sensor arrives with another 8 AAA batteries which make it possible to use directly when you

Smart Door Sensor Alarm Wireless, WiFi Door Window Detector with 8 Batteries, Smart Linkage Window Door Contact Sensor for Home Security Compatible