Highest light output and maintenance over time. It has the HR96 or W150 reflector for the maximum efficiency and uniformity. Highly efficient passive cooling of ballast for a longer lifetime of the electronics. Sealed housing with Gore-Tex® ventilation plug and controllable output up to 1150 Watt. Equipped with Repeater Bus interface which is a double-port connector on the ballast that allows you to directly daisy chain 100 fixtures per string and five strings per controller port to connect a maximum of 500 fixtures per controller port.