Click to expand Tap to zoom Auxiliary Input Unit by C-Bus Sale $407.50 | / SKU L5504AUX 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart SKU: L5504AUX C-Bus AUXiliary Input Unit, 4 Channel C-Bus AUXiliary Input Unit, Learn Enabled. Datasheet Download the Datasheet