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Aqara Door and Window Sensor Kit - 3 Pack, Requires AQARA HUB, Zigbee Connection, Wireless Mini Contact Sensor for Smart Home Automation, Compatible with Apple HomeKit, Alexa, Works with IFTTT - Amazon.com
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WiFi Door and Window Sensors,Tuya Smart Alarm with Free Notification APP Control Home Security Alarm System, No Hub Required,Compatible with Alexa(NO.235) - Walmart.com
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Bullpiano WiFi Door Sensor Smart Window Sensors Door Alarm Door Alarms for Kids Safety Door Alarms for Home Security Apartment Security Window Alarm for Alexa Devices for Home Door Alarms Smart Life -
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WBM SMART WiFi Door Sensor, Window Alarm Sensor, Wireless Security Alarm, Compatible With Alexa, App Control HD-DS-01 - The Home Depot
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Skylink SmartThings Door and Window Sensor - Monitor Doors and Windows with Open/Close Signals - Battery Operated in the Door & Window Sensors department at Lowes.com
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