AIC SIEMENS Audio Input Card-Use To Input External Audio Signals Into Sys. One Card Slot Cc-5/Cc-2The Siemens Audio Input Card (Model AIC) provides two (2) external, isolated analog inputs to the Cerberus PRO Modular systems. Model AIC also provides two (2) dry contact inputs used to separately activate the two (2) audio inputs. Model AIC is a CAN network card, and the number of allowable addresses is from 1 to 99. Additional information Weight 1. 2 lbs Manufacturer Siemens Industry, Inc. Brand Siemens Condition New Unit of Measurement EA (Each)