The Ampere-hour Timer Type 4 (2HT4) is a universal-type timing unit allowing for a wide range of various time cycles to be completed in a short time. It is used to control and schedule the operation of motors, pumps, relays, and other devices. The 2HT4 timer has a micro programmable time switch with a cycle range from 0.1 to 999.9 seconds, a 6-digit LCD display, and a self-starting motor. It also includes adjustable offsets, relative timing setting, LED indicators for clock and power, and optional digital output for cycle/monitoring purposes. It is designed to support a variety of different industrial applications and can be combined with other Ampere-hour components in order to create a larger control system.