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this unit is a complete assembly that includes the pre-mounted electronic control module
this adaptor offers a reliable connection point for pressure gauge installation and diagnostic testing
a direct-acting model should be used instead
specifically model VPA5812-7SRD
Rugged Durability: Engineered to resist the moisture and temperature extremes typical of commercial HVACR applications
Siemens Combustion QRA2M(1) Detector 326010-701 this unit is a completeThe Siemens QRA2M(1) is a high sensitivity ultraviolet flame detector engineered for supervising gas and oil flames in industrial and commercial burner systems. Utilizing an intermittent operating mode, this UV flame detector monitors radiation intensity during each half cycle to provide accurate signal current to Siemens burner controls for safety critical flame supervision and ignition spark proving. The QRA2M(1) features a robust, metalized plastic
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