The LA-1 is a 0-10v lighting adapter designed to control most types of supplemental lighting including LEDs and HIDs that use a standard 0-10VDC signal to control the light intensity and to turn the lights on and off. If your lights have a 0-10v option, and a RJ port to connect to an external lighting controller, the LA-1 adapter and the Croptiva SEN-1, Sentry or GUARD-1, Guardian main controllers can control your lights. The LA-1 outputs up to 30ma of power to control your lights using the variable, low-voltage 0-11.5 volt signal. Approximately 40 lights can be controlled with each LA-1. (Some lights cannot be dimmed “down” and dimmed “up” all the way from 0-115%, check you light specs for details on the dimming range.)