Pro1® Non-Programmable Thermostat, 0.2 to 2 deg F Differential, Relay, 2 Switches, Terminal Designations: RH, RC, C, Y, W, G, B, O, 2 Stage, 24 VAC, 4 sq in LCD Display, Battery/Hardwired, Wall/Junction Box Mount, Black, 4.4 in H x 4.7 in W x 1.1 in D, Import