The LS6 and 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.