SONOFF SNZB-04PR2 pairs a Hall-effect contact sensor and AAA battery power with Zigbee (EndDevice) connectivity and tamper alerts; it integrates cleanly with Zigbee2MQTT/OTA and Matter bridge setups but cannot act as a Zigbee router and has occasional transmission hiccups after idle. Good choice for Zigbee/Home Assistant users wanting durable, non-mechanical sensing and easy pairing; watch mesh planning and potential first-transmit reliability issues.
Best for Zigbee/Home Assistant users who want a durable, Hall-effect door sensor with tamper alerts; avoid if you need battery devices to act as Zigbee routers or require flawless first-event reporting.
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