Hello,
I am reporting a regression issue with the “External Sensor” feature after updating the SONOFF SNZB-02DR2 firmware:
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Issue Summary: My SONOFF SNZB-02DR2 was successfully updated to firmware version 1.0.5. Immediately following the update, the external temperature readings that were previously displayed on the SNZB-02DR2 screen vanished.
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Troubleshooting Performed: I performed a full factory reset on the SNZB-02DR2 and re-paired it with SONOFF iHost. The pairing completed successfully.
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Binding Process Failure:
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When I open the SNZB-02DR2 settings in iHost and select an external temperature sensor, iHost prompts me to press the button on the back of the SNZB-02DR2 once to confirm the binding.
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I press the button once on the SNZB-02DR2. The min/max temperature and humidity readings on the device display briefly disappear and then reappear (without showing the external sensor readings).
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Simultaneously, iHost displays an error notification: “Failed to communicate with the device, please try again.” (or “Failed to connect with device”).
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The Zigbee signal strength is excellent, and standard telemetry syncs normally. The failure occurs exclusively during the button-press confirmation step when binding an external sensor. This feature worked perfectly on the previous firmware version.
Please forward this issue to the SNZB-02DR2 firmware development team so they can investigate and release a fix.