Lighting / Contactors & Timers
Regular timers will not do for switching HID lighting, they simply cannot handle the load and are likely to fail very quickly meaning your lights may fuse on or off. Therefore contactors and relays must used for switching the lights on and off, the unit takes all the strain of the light(s) and there is no stress placed on the timer meaning no more problems with light switching. It also allows the grower to control up to 8 lights from one unit so less plug sockets are used.
Some contactors/relays need a timer to work, you can find timers under the Miscellaneous section.