Honeywell C7770A1040 6" Duct Probe Temperature Sensor 20K Ohm NTC

The Honeywell C7770A1040 Duct Probe Temperature Sensor, which measures the air temperature in the HVAC systems with the help of a probe of 6 inches in length. This sensor used a 20K Ohm Negative Temperature Coefficient thermistor which implies that the resistance of the thermistor reduces as the temperature rises. In this way, the change of the resistance is used by the HVAC control system to calculate the air temperature in the duct. This sensor is applied in air handling units, rooftop units, and other ducted HVAC equipment to measure supply or return air temperature. The advantages are gathering correct temperature values for better conditions control this would increase system efficiency and may contribute to energy saving.