Interlink card 3000 series. Allows to connect up to 8 units 3000 series in MASTER/SLAVE configuration. Installable in the cabinet of the 3000 series unit, from which it receives 24V DC power supply. Offers global emergency functions, maintaining local paging and background music. Redundant RS485 communication bus for audio and commands. Dimensions (L x D) 130x115mm. EN 54-16. Type approval certificate 0068-CPR-007/2015.