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Siemens 540-100N — Description
* Type: TEC Terminal Box Controller
* System: Siemens APOGEE / P1 FLN
* Application: VAV terminal units, including cooling-only, heating/reheat, and fan-powered boxes.
* Inputs: Air-velocity sensor, room temperature sensor, and optional setpoint/auxiliary temperature inputs.
* Outputs: Digital outputs for damper actuator, valve actuator, fan control, and other terminal equipment functions.
* Airflow: Uses differential pressure/air-velocity sensing to calculate airflow.
* Power: 24 VAC-class low-voltage building-automation controller.
* Part number: BPZ:540-100N. Siemens currently lists the product as active.
