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.
• 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.