These time switches are designed to operate high load lighting equipment. They consist of a premium quality precision synchronous clock motor and a high amperage switching circuit. These controllers are housed in black anodized brush finish aluminum enclosures which will not break, chip or corrode. Operates with a maximum combined outlet switching capacity of 40 amps. Plug or wire the power cord into a receptacle capable of handling the maximum total combined amperage draw of your equipment load. Plug lighting equipment into outlet receptacles located on each side of controller. Timer has 96 non-detachable 15 minute on/off trippers. The LT4-120 provides four 10 amp outlets, and is capable of controlling up to four 1000 watt lights each.