Intermatic ET8015CR 7-Day 30-Amps SPST Electronic Astronomic Time Switch, Clock Voltage 120-Volt-277-Volt NEMA 3R, 1-Circuit/30-Amp, Color;

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 of user interaction. They come in standard 24-hour, 7-day and 7-day Astronomic versions.