Round Pattern (RPTS) Standard time switches are robust, 20amp switches that are ideal for the switching of heating and lighting applications- up to three times a day. The S255 has a 4-pin base which means it has independent 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. A refurbished S255 time switch which has been re-conditioned to a high standard and comes with a 1 year guarantee. FEATURES Programming: 24 hour with 2 or 3 on/off operationsCurrent Rating: 20AConnection Pins: 4Battery Reserve: NoneDay Omit Dial: Yes (Omits the ‘ON’ operation)