 HONEYWELL C7400A1004 Enthalpy Sensor for supply duct or return air with a 4-20 mA output sensor. C7400 Solid State Enthalpy Sensor is used with Honeywell economizer logic modules to proportion outdoor and return air dampers in economizer systems. Features • C7400 solid state elements sense enthalpy (temperature and humidity); use two sensors for differential control, maximizing energy savings. • Use one sensor in outdoor air for single sensor control; use two sensors, one in return air and one in outdoor air, for differential control. • C7400 mount in any position up to 200 ft (61 m) away from W7459. • UL94-5V enclosure.
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