Fanuc A03B-0819-C011 Interface Module. DNC offer exchange and outright stock of this AIF01A interface module (B generation) for series 16i, 18i, 21i controls. Sometimes carries the designation A03B-0819-J011. Supplied with 180 day warranty (stock permitting). Testing on its back plane is available to make sure that its interfacing back to the i series CNC and to the other modules which communicate the I/O instructions / feedback between the NC and the MC, etc.