If you're looking for an electronic ballast with a good price/performance ratio, the Lazerlite 600w from Pure Light is sure to please you. You will be able to regulate between its 4 powers to use bulbs of different powers.
The Lazerlite 600W ballast is compatible with 250W, 400W, 600W, halogen and sodium lamps. If you are looking for a universal ballast it is certainly a great choice.
has a knob to control the potentiometer, plus the super lumen option which increases the maximum power by 10%.
Being a last generation ballast has thermal protection, against misfiring or short circuits.
It is silent, discreet and can be placed 15 meters (5o feet) away from the lamp.
It has an input voltage of 230/240V.
Does not include c-14 cable.