Monitoring Doors & Windows Automatically turning on lights when a door is opened, triggering audible and visual alarms in case of unauthorized entry, and sending app notifications to keep you informed. Tamper Alert Equipped with tamper-proof features ensures your peace of mind. You will receive App notifications on your phone if the sensor is tampered with. 5-Year Battery Life Powered by CR2477 battery extends the battery life to over 5 years, eliminating concerns about frequent battery replacements. Zigbee 3.0 Compatible Seamlessly integrates with Zigbee hubs utilizing the Zigbee 3.0 protocol, such as SONOFF NSPanel Pro, SONOFF iHost, SONOFF ZB Bridge Pro, SONOFF ZBDongle-E, and Echo Plus 2nd Local Smart Scene With Local smart scene, scene linkage between Zigbee devices can be executed normally as long as your Zigbee devices are powered on even if the network is disconnected. Note : SNZB-04P needs to be used with Zigbee Hub. OverviewSNZB-04P is a Zigbee 3.0 protocol-based door/window sensor equipped with a tamper-proof feature. It seamlessly interacts with other smart devices to easily create various scenarios, such as automatically turning on lights when a door is opened, triggering audible and visual alarms in case of unauthorized entry, and sending app notifications to keep you informed. Compared with SNZB-04, SNZB-04P has improved design and performance. With a tamper alert, 5 years battery life, Maximum installation distance is 20mm, and the sensor on/off for more than a period can be used as a scene trigger condition. Equipped with tamper-proof features ensures your peace of mind. You will receive App notifications on your phone if the sensor is tampered with. With local scene intelligent linkage, even if your WiFi network crashes, you can still activate Zigbee local scenes as long as your Zigbee devices are powered on. Lower latency, higher reliability.