The SSAC TDM120A is a multi-function timer designed to provide precise timing and switching functions in a variety of applications. It is suitable for use in HVAC, industrial, and commercial applications. This timer can be used to control single-phase motor and resistive loads, and operates both in 24-hour and 7-day modes. It can also be used as an on/off switch for accessories and lighting, and is suitable for pump control both as a cycle timer and as an on/off switch. It is available in three versions - 120VAC, 120/208VAC and 220/277VAC. This timer provides up to 20 preset timing and switching functions, including operator adjustable delayed start, one to four hour on/off switch, maximum run time, cycle time, and on/off switch. The TDM120A also features an adjustable daylight savings switch, random start function, reset switch, and current sensing protection.