Check the listing for details. Brivo Onair B-ACS6008-EXP Expansion Chassis. Condition: New. Listed at 177.09 USD. The Brivo Onair B-ACS6008-EXP Expansion Chassis is a secure, scalable hardware enclosure designed to house additional Brivo access control boards, enhancing the capacity and functionality of your Brivo Onair system. Ideal for expanding multi-door configurations, this chassis accommodates up to three expansion boards, allowing seamless integration and centralized power distribution. The B-ACS6008-EXP features robust metal construction for durability and tamper resistance, ensuring dependable operation in commercial and industrial environments. It includes an internal power supply with battery backup support and integrated cable management to simplify installation and maintenance. This expansion chassis is critical for facilities needing to extend their access control coverage while.