When replacing an obsolete steel or cast module

ensuring the digital communication signal (S2-S3) stays within the required 12-24VDC pulsating range

This is a 56-frame unit

0 mA minimum sensitivity)

As a 1-try ignition sequence model

Siemens Building Technology QAM2030.500 Temperature Sensor 321042-401 When replacing an obsolete steelFor high performance air handling and environmental monitoring, the Siemens QAM2030. 500 is a field proven duct averaging temperature sensor designed to handle the complexities of thermal stratification. This professional grade unit features a 16 foot flexible probe constructed from durable Galfan steel tubing, allowing for comprehensive coverage across large duct cross sections. By utilizing a 10k Ohm Type 2 Thermistor sensing element, the sensor