The LS6 & LM6 dimmer packs replace the LM690. The LS6 is a six channel power controller suitable for all types of lights including neon, dimmable fluorescent, transformer driven low voltage lamps (eg pinspots), tungsten and quartz halogen, in addition to projectors with electric motors. The LM6 gives you individual dimming control over six lighting circuits with an overall dimming control as well.