The accessory enthalpy switch/receiver measures both temperature and humidity and converts the data into a relay output dependent on the sensor mode. Mode 1 is designed to energize the relay at a fixed set point of 28 BTU/lb or 75 F.
Operating range of -40 to 140°F (-40 to 60°C) and 0-100% RH non condensing
Enthalpy range of 0 to 50 Btu/lb
Enthalpy accuracy of +/- 1Btu/lb at 77°F (25°C)