Available: 3 units. Supplier stock: held by the supplier in Montreal, not at Godberd; sold to order. About this item (general description from the make and model, not yet checked against a manufacturer sheet) Strand Lighting's CD80 is a long running family of theatre dimmer racks, and the Advanced Electronics unit is the processor and programming module that controls the dimmers in a CD80 rack, setting dimmer curves, patching and responding to the control desk. It is used by theatres, schools and television studios that run CD80 dimming, and on its own it does nothing without a CD80 rack to plug into. It connects to the rack's backplane and to the lighting console over the control protocol fitted, which on later versions is DMX. The listing offers three units. CD80 is a discontinued but widely installed system, so these suit a venue keeping an existing rack in service or holding spares.