Watch our DE Lamp Installation video here: https://tinyurl.com/yxjl54bk
EXT simply stands for External. Your HELLION ballast knob must be set to this position if you wish to use an external controller via the rear ports.
Any standard 0 to 10V protocol lighting controller can be used (0 to 11.5V for the 1000W HELLION ballast) via the RJ11 rear panel socket.
The IN/OUT RJ11 controller ports are buffered so you can daisy chain as many ballasts as your controller allows.
Thanks to the cooler running temperatures and superior lamp and reflector design, our lamps last longer than competitors. If running at 12/12 every day, change your lamps no less frequently than every two years.
CMH and DE-CMH lamps should be changed every 12 – 18 months when run on 18 hours a day.