The SSAC TSD1624 is a time switch designed for control of lighting and heating systems. It has a 24-hour format with a three-way synchronization capability to automatically switch outputs at pre-determined programmed times. It also features a convenient timer-position selection switch to provide weekday/weekend functions, manual override and override disable functions, contact ratings of 2A 125VAC, delay on and off timing selections, and a selectable real-time clock. It is RoHS compliant, UL approved, and CSA certified.