This is a 4 channel portable DMX dimmer/switch pack. Each channel can individually be set to dim or switch and the pack can function as a one, two or four channel device. Using the packs digital display, the pack is quick and easy to set up. There are dual Edison sockets supplied so more than one par or effect can be connected to each channel. 16 built in chase sequences, with speed and intensity control, are available for your convenience. Four external channel fuses allow for quick and easy field serviceability.