Intermatic
24-Hour 1 Circuit Electronic Control, 120-277 VAC, SPST, Indoor Metal Enclosure
This series offers an easy way to upgrade from a basic mechanical time switch to an electronic time switch. These timers will allow for up-to-the-minute programming, battery backup for power loss, up to 28 events total, and automatic daylight saving time corrections without the need for user interaction. They come in standard 24-hour, 7-day, and 7-day astronomic versions.