What specifically do you need to know? There are two memories to switch between, set either or both, use memory one for one application, then switch to two for another. The red button starts the count down. The time increment buttons are self explanatory, as is the clear. Set the "enlarger" switch to the middle time setting, set the time then push red button for enlarging. Set switch to far right for focusing and alignment, then back to the left one notch when ready to make a print. Set the "safelight" switch to on to leave it on, set to mid "time" and it stays on until you start enlarging, then it goes off until timer runs down to zero. Metro/warn switch sets sound, ticking count down, no ticking, bell at end of cycle, or nothing at all.
