SONOFF ZigBee Smart Home SNZB-04/SNZB-04P Window Sensor eWeLink APP Alert Notification Smart Home Security Detector For Google

“SONOFF SNZB-04/SNZB-04P is a ZigBee magnetic window/door contact sensor with eWeLink app integration and battery power (small coin cell). It provides ZigBee connectivity and app alert notifications for simple open/close monitoring, making it a practical low-cost sensor for eWeLink/ZigBee smart homes, but listings have sparse buyer detail so expect some uncertainty about long-term reliability.”

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