We sell a number of timers and contactors with different power ratings suitable for any grow room in order to automate their lighting cycles. Manual switching is possible although it is highly impractical and allows for timing mistakes which could be costly for your plants.
So you will need a high quality timer to control your light cycles with precision and our high quality Grasslin timers are the ideal choice. If you are going to use a timer with a High Intensity grow light then you will need to protect that timer from high start-up currents by using a Timer Contactor. These simple devices insulate your timer from high currents thus ensuring that they cannot get damaged.