The S255 has a 4-pin base which means it has independant motor connections which enable a different switching circuit voltage from the voltage powering the time switch.The day omit feature means you can skip any day of the week if necessary.There is also a manual override button for your convenience. The S255 is a fit-and-forget time clock.
Day omit on operation (stay off on selected days)
24 hour cycle
4-pin base (volt free -independent clock & switch supply)