SONOFF SNZB-04PR2 SenseGuard DW Gen2 Zigbee Door/Window Sensor Active Security with Tamper Alerts App Monitoring via ZBBridge-P
Computer Peripherals
“The SONOFF SNZB-04PR2 utilizes a Hall effect sensor for reliable, contact-free state detection and features a robust tamper-alert system for enhanced security. While it offers excellent battery longevity via a high-capacity CR2477 cell, users should be aware of a documented latency issue where the device may fail to report the first action after prolonged inactivity.”
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Hall effect sensor provides contact-free detection, eliminating mechanical wear and contact bounce.
smarthomescene.coma Hall effect chip detects the magnetic field electronically with no moving parts
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High-capacity CR2477 battery ensures multi-year operation with minimal maintenance requirements.
jpk.iomulti-year life is not marketing fluff, it is just physics
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Integrated tamper detection triggers instant app alerts if the sensor is unauthorizedly removed.
sonoff.techfeatures anti-tamper detection, sending instant app alerts
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Device may fail to transmit the initial state change after several hours of inactivity.
zigbee2mqtt.iosensor might fail to transmit the first action after a few hours of inactivity
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End-device architecture prevents the sensor from acting as a signal repeater for others.
smarthomescene.comSince it is an EndDevice, it cannot relay traffic for other devices
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The sensor might fail to transmit the first action after a few hours of inactivity.
zigbee2mqtt.ioThe sensor might fail to transmit the first action after a few hours of inactivity.