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.
SONOFF SNZB-04 is a ZigBe
SONOFF ZigBee Bridge is the heart of smart home that enables you to remotely manage a variety of ZigBee devices and sensors for monitoring and control
SONOFF Zigbee Bridge Wireless Switch Temperature Humidity PIR Door Window Sensor
Sonoff Basic Wi-Fi Smart Switch with zigbee 10A 230V - Oomipood
Sonoff Zigbee Wireless Door/Window Opening Sensor - Oomipood
Sonoff USB - Zigbee dongle - Oomipood
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
Sonoff ZigBee Wireless Door/Window Sensor
Sonoff ZigBee Wireless Door/Window Sensor
Opening sensor snzb-04 buy
Sonoff Base for PIR3-RF and Zigbee Motion Sensor - Oomipood
Sonoff RF zigbee Bridge - Oomipood