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It is recommended to retain the original fasteners when removing the old discharge grille
reducing installation overhead for contractors troubleshooting complex HVAC control sequences
the internal safety logic permanently configures the board for that application
Durable Construction: The unit bearing design and aluminum housing provide superior heat dissipation and structural integrity for industrial use
Siemens Building Technology QAA2212.EWNN Sensor 326058-756 It is recommended to retainThe Siemens Building Technology QAA2212. EWNN Sensor is a high precision room temperature sensor designed for accurate environmental monitoring in commercial and industrial HVACR control systems. This passive sensor utilizes a Platinum 1K Ohm Pt RTD (Resistance Temperature Detector) with a 385 alpha coefficient, ensuring stable resistance output and long term reliability without the drift common in lower grade components. Built for seamless
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