VDS Class C approved the system to meet the highest security standards, the SPC6350 , SPC5350 , SPCP355 provide the functionality and capacity to meet the demanding security requirements of SPC Class C systems.    listing of Vanderbilt VDS Class C approved systems The largest Capacity system in the Vanderbilt VDS Class C Range 512 Zones 2500 … Continue reading VDS C – APPROVAL OF COMPONENTS AND SYSTEMS