Sonoff Zigbee Wireless Door/Window Sensor ||| SNZB-04P

• Automatic Alerts: Lights turn on, alarms sound, and you get app notifications when a door or window is opened.
• Tamper-Proof: Enjoy peace of mind with tamper alerts sent straight to your phone.
• Long Battery Life: Sonoff Zigbee Wireless Door/Window Sensor powered by a CR2477 battery, enjoy over 5 years of hassle-free use.
• Zigbee 3.0 Compatible: Sonoff Zigbee Wireless Door/Window Sensor works with Zigbee hubs like SonoffNSPanel Pro,iHost,ZB Bridge Pro.
• Reliable Local Smart Scene: Functions normally even if your network is disconnected.