When using HID lighting it is crucial to control your lighting cycle with a contactor timer. HID lighting is a too heavy electrical load for standard domestic timers causing the units too fail and become a potential electrical hazard. The Black Box contactor range is by far the best on the market, made in the UK, these highly professional units control industrial lighting with excellent reliability and are made to the highest possible quality. They all feature professional Grasslin timers, rubberised leads and moulded plugs, switchable sockets for absolute control and a handy hanging bracket.