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12-inch (30cm) 21-LED Slim Light Bar with Smart Motion Sensor H3789
Brand: Generic / OEM
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Audited BOM: 9 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
The low-quality PIR sensor (ENG-001) causes activation failures, leading to customer complaints (REV-001) and returns (RMA-001).
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