Honeywell Prestige® THM5421R1021/U Programmable Interface Module, 18 to 30 VAC, 1 A Cool/Heat, 0.5 A Fan, 50/60 Hz
Honeywell Prestige® Programmable Interface Module, 18 to 30 VAC, 1 A Cool/Heat, 0.5 A Fan, 50/60 Hz Frequency, 5 to 95% RH Humidity, -40 to 165 deg F, Gray, 6-1/9 in W x 1-5/8 in D x 9-5/16 in H Dimensions