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130dB Personal Alarm Keychain
Brand: Generic / OEM
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Audited BOM: 6 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
Inconsistent sound module quality (COMP-002) leads to volume variation (ENG-001), resulting in weak alarms (RMA-002) and customer complaints about low volume (REV-001, REV-003).
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