The ESI ES2247B 2 Channel Programmer and Thermostat in White is a reliable and efficient device for controlling your heating and cooling systems. This programmable thermostat has a 7-day schedule and allows for programming up to 2 or 3 periods per day. The rectangular-shaped thermostat features a digital display, timer, and is compatible with wall heaters. Powered by corded electric or batteries, this ESI model offers easy control with its analog/mechanical style, making it a practical and convenient choice for home heating and cooling management.