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4.3" Video Doorbell Intercom SIGMA-P1203
Brand: Generic / OEM
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Audited BOM: 14 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 audio component (microphone/speaker) and lack of audio processing (noise/echo cancellation) result in poor audio, leading to RMAs and negative reviews.
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