Digital 2 heat/1 cool 5/2 programming with 4 periods per day. For use with central gas, oil, or electric furnaces, and A/C. For millivolt systems. For heat pumps without auxilliary heat. Precise temperature control (+/- 1 degree). Easy to install. Backlit display. No. RTH2300B1012/E1: Programmable: 5-2 Day Programmable, Color: White, Batteries Required: (2) AA, Pkg Qty: 1, Package Type: Clamshell
