![Taiwan, Province of China[a]](https://files.upgates.com/graphics/countries/tw.svg "Taiwan, Province of China[a]"){kind=small}
The KAC 504 traffic module allows the KMD 540/550/850 multi function display (MFD) to display and control of several models of traffic avoidance systems. These include the TCAS I (Traffic Collision Avoidance System), TCAS II, TAS (Traffic Avoidance System) and TIS (Traffic Information Service).
The KAC 504 card fits easily within the casing of the KMD 540/550/850. Add it by simply unscrewing and sliding back the side panel.
