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Presence Sensor with Doorbell SIGMA-LKM3000B
Brand: Generic / OEM
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Audited BOM: 10 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 PIR sensor (COMP-001) is prone to failure due to temperature variations (ENG-001), leading to motion detection failures (RMA-001) and false triggers (RMA-005), which is corroborated by several negative customer reviews (REV-001, REV-002, REV-003, REV-005, REV-006).
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