Honeywell 194950E High Accuracy Sensor +-2F

The Honeywell 194950E High Accuracy Sensor is a temperature-sensing element that monitors air or surface conditions within a heating or cooling circuit, delivering readings held to a +-2F tolerance across its operating range. The thermistor-based element shifts resistance in proportion to thermal change, feeding a continuous analog signal to the connected control board without requiring external amplification in HVAC systems. The sensor feeds data that regulates burner staging, blower sequencing and setpoint response. Readings within tight tolerance at this point prevent the controller from under-firing or overshooting, keeping the thermal cycle within the equipment's rated operating band.