Honeywell RTH221B Basic Programmable Thermostat. Offering the ease and reliability of basic programming, the Honeywell RTH221B One-Week Programmable Thermostat can help save money on your energy bills--without sacrificing your comfort. RTH221B One-Week Programmable ThermostatAt a Glance:Basic operation keeps programming easy 4 program periods per dayPrecise temperature control of + /- 1 degreeFor use with central gas, oil, or electric furnaces and AC1-year warrantyUsing a programmable thermostat is one of the easiest ways to reduce energy costs. In just minutes, you can create one simple program that will run for the entire week, with up to four program periods per day (wake, leave, return, and sleep). Precise, Programmable Temperature ControlThe RTH221B lets you control the temperature inside your home, even when you're not there.
Shipping Weight: 9.6 ounces
Shipping Dimensions: 11 x 7.5 x 9 inches