INFINIAS Elevator Control 16 Channel Base Unit Kit. This kit contains the following: (1) EIDC+ Controller, (1) Rack mountable 1U Chassis, (1) RS-232 Converter, (1) RS- 232 Module, (1) Wireless relay controller, board, (MISC) cabling and parts, S-EC-1 INFINIAS Elevator Control License. Note: Will control up to 16 floors. Expansion board needed for 16+ floors. Requires PROFESSSIONAL or CORPORATE INFINIAS software and INFINIAS Certification.