Push button Orests the system and displays 00 SWO increases the time by 5 seconds SW1 increases the time by 10 seconds SW2 increases the time by 20 seconds SW4 is normally in the 0 position, move it to 1 start countdown The time decreases every second and the updated time is displayed on the displays. The time is displayed as decimal Countdown stops at 00 Maximum time is 99 seconds, any deposit after that saturates at 99 seconds.