A light timer is needed to automatically and safely switch the grow lights on and off.
In order to protect the timer from high start up currents most have built-in contactors or relays. A common effect when if you don’t use a contactor when using timers with a HID grow light is that the timer can become damaged and will not switch off. This can leave your lights on continuously until you next check on them and this can cause havoc with the growth cycle of your plants.
Our timers can be used with pumps, heaters, lights – even intake & oscillating fans! We also have professional standard all-in-one light and contactors designed for multi-light setups.