PRO1® Non-Programmable Wi-Fi Thermostat, 24 VAC, White, 90% Non-Condensing Humidity Rating, +/-1 deg F Accuracy, LCD Display, 50/60 Hz, 44 to 90 deg F Temperature Settings, 1 Stages, Junction Box, Wall Mounting, 32 to 105 deg F Ambient, 4.4 in H x 4.7 in W x 1.1 in D