PRO1® Universal Wi-Fi Thermostat, 18-30 VAC, 1/1.5 A, 90% RH Non-Condensing Humidity Rating, +/-1 deg F Accuracy, 50/60 Hz, 44 to 90 deg F Temperature Settings, 8 Stages, Junction Box, Wall Mounting, 7-day Programmable Programmability, 41 to 95 deg F, 32 to 105 deg F, 4.4 in H x 4.7 in W x 1.1 in D