DJ Lasers are an affordable option when selecting a laser and include a few pre installed programs that will change to the beat of the music or give you the option to manually control the unit. DJ lasers are recommended for smaller venues and the mobile DJ. Most DJ lasers are capable of generating three or more different colors (depending on the laser) from a single unit. DJ laser projectors can also be plugged in and left to run on their own using their built-in programs, or via a sound-activation mode that follows the beat of the music. DJs can link multiple units together in master-slave or DMX configurations.