Velleman 10 channel light effect generator velleman vm120 whether you re looking to enhance advertising signs with lighting step up the effects at the disco or simply make the party go with a swing the velleman 10 channel light effect generator module can do the job for you this kit has ten outputs to control cold cathode fluorescent lamps light bulbs leds or solid state relays it is also available in kit form velleman vm120 10 channel 12vdc light effect generator electronics kit