24-Hour 2-Circuit Electronic Control, 120-277 VAC, 2-SPST, Indoor Metal EnclosureThis 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 of user interaction. They come in standard 24 hour versions. Selector switch to determine input voltage between 120 277 VAC Up to 28 events total To the minute accuracy