Home & Kitchen > Home Security > Alarm Systems & Accessories > Motion Detectors
Presence Sensor + Doorbell SIGMA-LKM3000B
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 (COMP-001) is sensitive to temperature variations (ENG-001), causing false alarms (RMA-001) and inadequate detection (REV-001, REV-005).
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+4 additional failure modes & return complaint chains locked
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