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error Stanley
Error Code UART failure with UD BLE module
UART communication failure detected with the UD (User Device) BLE module.
✓ How to Fix It
Restart the Controller. Check for hardware issues with the UD BLE module. Contact support if issue persists.
Source: page 20 of the official manual
From the manual
This error code appears in:
Stanley WanderGuard BLUE Detector