Attributes . The Model 83 Timer is single preset model. The main display line is red and shows the timer value. The smaller secondary display line is green and can be used to view the preset values or output time values. The 83 Timer can be configured for a variety of different operating modes to meet most timing application requirements. The run⁄stop and user inputs can be configured as sinking (active low) or sourcing (active high) inputs via a single plug jumper. The user inputs and the front panel function key can be configured to provide a variety of functions. The unit is made of lightweight, high impact plastic with a textured front panel and a clear display window. . Names