SONOFF SNZB-04PR1 Zigbee Door and Window Sensor with Tamper Proof 【Zigbee hub required】 Smart Home Security & Automation：Automatically turn on lights when doors or windows open, trigger sirens for unauthorized entry, and receive instant app alerts wherever you are. Perfect for home security, entryways, mailboxes, and garages. Tamper Alarm for Added Protection：Built-in tamper detection sends instant app notifications if the sensor is removed or tampered with, helping keep your smart home security system protected Local Zigbee Automation：Create reliable local smart scenes between Zigbee devices that continue working even if your Wi-Fi or internet connection is unavailable, ensuring faster response and dependable automation. 5-Year Battery Life：Powered by a long-lasting CR2477 battery, the sensor delivers over 5 years of battery life under typical use, reducing maintenance and eliminating frequent battery replacements. Broad Zigbee 3.0 Compatibility： Compatible with Zigbee 3.0 hubs including SONOFF ZBDongle Series, ZBBridge-P/U, iHost, NSPanel Pro, Home Assistant (ZHA), SmartThings(via SmartThings Hub V3, Aeotec Smart Home Hub V3 ), Alexa (Echo Plus 2nd,c Echo 4th Gen, Echo Show 2nd), Zigbee2MQTT, and more.