Honeywell Humidity and Temperature Transmitter, 18-40VDC/18-28Vac, -10/140 Degree Operating Temperature Range, 0/95% RH Operating Humidity Range, Duct Mount, ± 3% from 20-95% RH Accuracy, 20K Ohm NTC Temperature Output, 4-20Ma,0-5Vdc or 0-10Vdc Selectable Humidity