The theben SUL 181 d timer with one channel and daily programme has 96 switching segments and is driven by a quartz-controlled stepper motor, which ensures precise timing in 15-minute intervals. It is possible to switch between 12- and 24-hour format. Simple summer and winter time correction is also possible. Furthermore, the clock can be corrected both clockwise and anticlockwise. In addition, the timer offers a preselection and a manual switch with three positions: continuous ON/AUTO/continuous OFF. Thanks to the three-day power reserve (1.5 days at 110 V), programming is maintained even in the event of a power failure. The maximum LED switching capacity is 180 W.