The wireless door/window sensor is essential for knowing who is coming in and out of your home, so it is most often used as part of smart security system.
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SONOFF Zigbee Bridge Wireless Switch Temperature Humidity PIR Door Window Sensor
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SONOFF RM433 BASE for Remote Controller - Oomipood
SONOFF SNZB-04 Zigbee Wireless Door Window Sensor, Burglar Alarm for Home Security, Compatible with Alexa Google Home, Zigbee Bridge Hub Required
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SONOFF SNZB 04 Door Window Sensor EWeLink Control Security Protection Alarm ZigBee WiFi Door Sensor Require SONOFF ZigBee Bridge
SONOFF SNZB-04 ZigBee Wireless Door/Window Sensor Enable Smart Linkage With ZigBee Bridge For eWeLink APP Smart Home Automation - AliExpress
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OUVOPO WiFi Door Sensor, Smart Door Window Sensor, Contact and Motion Sensors for Home Security & Automation, Easy Installation, Monitor Open/Close Status & Power, Real-time Alerts, Works with Alexa : Tools
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