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Uses thermistor sensing element in ventilation duct systems
Negative temperature coefficient (NTC) causes resistance to decrease as sampled air temperature increases
Resistance change used as in input to control W973 and M7415
Requires no settings or calibration
Mount on a-mounting bracket (not included) inside the mixed air or discharge air duct
1/4 in quick-connect terminals
3000 ohms at 25C NTC sensor
250 deg F ambient temperature