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This OEM component serves as a critical safety interface
ensuring proper lead lengths and mounting alignment
Standard Magnehelic gages are factory-calibrated for vertical mounting
Can this unit be used on a continuous-run burner
Siemens Building Technology QAA22SS.EWSN Sensor L99H008 This OEM component serves asThe Siemens QAA22SS. EWSN is a professional grade multi signal room temperature sensor designed for seamless integration with high performance building automation systems. Built as the direct updated replacement for the QAA22SS. EWNN, this field selectable unit offers contractors maximum versatility by allowing a choice between 0 10Vdc, 0 5Vdc, or 4 20mA analog output signals via an internal jumper. This eliminates the need to stock multiple SKUs for