Industrial & Scientific > Automation & Control > I/O Modules
ESP32 Wi-Fi RS485 8-Channel DIN Rail Relay Module
Brand: Generic / OEM
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Audited BOM: 8 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 use of low-cost, limited-lifespan relays (COMP-002) is an engineering failure (ENG-002) that directly leads to RMA (RMA-001) and negative customer feedback (REV-002).
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