MATRIX DMX PRO 4 Channel Double Output Dimmer Pack A dimmer pack is used to DIM, or change the intensity of the lights in a theatrical show Dimmer packs are commonly controlled remotely from the lighting control console The main protocol used in controlling a dimmer pack are 0-10v analogue or DMX-512 The most common Dimmer Packs are the DMX Dimmer Pack using DMX512 protocol