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SKU: 1005011618338650

SONOFF SNZB-04PR2 SenseGuard DW Gen2 Zigbee Door/Window Sensor Active

Name: SONOFF SNZB-04PR2 SenseGuard DW Gen2 Zigbee Door/Window Sensor Active
Brand: SONOFF
SKU: 1005011618338650
Price: 7.67 USD
Availability: InStock
Rating: 1.8 (12 reviews)

Verified 1d ago

$7.67

$1 above 30-day low→ Stable

Buying guide: Computer Peripherals

Expert Verdict

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.

Best For

Home automation enthusiasts using Zigbee2MQTT or ZHA who prioritize long battery life and tamper detection; avoid if you require a sensor that acts as a Zigbee mesh repeater.

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Expert Quality Score

35/ 100

Scores updated 6 days ago

Reviewed by 10 expert sources (+2 qualitative)

high confidence

Pros

+Hall effect sensor provides contact-free detection, eliminating mechanical wear and contact bounce.“a Hall effect chip detects the magnetic field electronically with no moving parts”smarthomescene.com
+High-capacity CR2477 battery ensures multi-year operation with minimal maintenance requirements.“multi-year life is not marketing fluff, it is just physics”jpk.io
+Integrated tamper detection triggers instant app alerts if the sensor is unauthorizedly removed.“features anti-tamper detection, sending instant app alerts”sonoff.tech

Cons

−Device may fail to transmit the initial state change after several hours of inactivity.“sensor might fail to transmit the first action after a few hours of inactivity”zigbee2mqtt.io
−End-device architecture prevents the sensor from acting as a signal repeater for others.“Since it is an EndDevice, it cannot relay traffic for other devices”smarthomescene.com
−The sensor might fail to transmit the first action after a few hours of inactivity.“The sensor might fail to transmit the first action after a few hours of inactivity.”zigbee2mqtt.io

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