Ltpgtltspangtround 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 dayampnbspltspangtltbr gtltbr gtltspangtthe 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 switchltspangtltbr gtltbr gtltspangtthe day omit feature means you can sk