These heavy duty Mechanical Time Switches are designed for industrial, commercial and residential applications and have the highest motorload ratings in the industry. They provide up to 12 ON-OFF operations each day with minimum ON-OFF time of 1 hour. All models are equipped with "ON" and "OFF" trippers. The T1----R Series Control Centers feature all-weather enclosure, equipped with one or two heavy duty timer mechanisms. Option to install switches or GFCI receptacle on the side; also for additional switches inside. The enclosure accepts any combinations of P1353ME or P4243ME or T100M or RC2000M or PF1000M Series mechanisms.