4-20 mA Enthalpy Sensor - supply duct/return air. Overview Analog enthalpy sensor for use with W7212 and W7459 economizer controllers 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 Economizer Logic Module. UL94-5V enclosure. Product Specifications Application Enthalpy economizing Sensor for A solid state enthalpy sensor designed to sense temperature and humidity with 5% accuracy Dimensions (in.) 4.25 in high x 2.17 in wide x .81 in deep Dimensions (mm) 108 mm high by 55mm wide x 20.5 mm deep Used With W7210, W7212A, W7213, W7214, W7215, W7459, W7460 Item Type Product Mounting Mounted in any position where it is exposed to freely circulating air Approvals, Underwriters Laboratories Inc. Component Recognized Electrical Connections Two 1/4 in. quick-connect terminals Operating Humidity Range (% RH) 11 to 89% RH Sensor 4-20 mA output Operating Temperature Range (F) -40 F to 150 F Operating Temperature Range (C) -40 C to 66 C Color Gray Ambient Temperature Range (F) 150 F Maximum Ambient Temperature Range (C) 66 C Maximum