The zc-smart-blind might be stopping after 1 second if the output it is driving is outside the current specification for this product, and the product is in Smart Calibration mode. The rated output load can be found in the Datasheet. The zc-smart-blind has a Fixed Calibration mode where the output load is ignored and a fixed period is used for calibration. More information on the Fixed Calibration mode can be found here.
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