Copeland 543-0071-00 Diagnostic Compressor Module
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The 543‑0071‑00 (also known as Comfort Alert® module) is a compact OEM diagnostic/protection device designed for Copeland and OEM-fitted scroll compressors. It installs inside the condenser unit’s control box and continuously monitors critical compressor conditions like current, voltage, temperature, and pressure—shutting the compressor down and triggering alerts when unsafe conditions are detected.
Specifications:
Manufacturer: Copeland 
Manufacturer Part Number: 543-0071-00
Product Type: Diagnostic Compressor Module
Dimensions: 7.3" x 4.3" x 2.6"
Weight: 2.0 lb.
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