Allows a technician to create an audio output that automatically switches between the main output signal and the microphone input connection. Used to provide an automatic "fail-over" connection for specialized on-air broadcast applications. Installs in one of the back-panel spare-connector locations. The card features a 3-pin male XLR connector and a high-reliability sealed electromechanical relay. Each kit includes card, interface cables, and hardware.

This card kit can be used on the following products:

• Model 210 Announcer's Console
• Model 211 Announcer's Console
• Model 233 Announcer's Console

This card kit can be used with the following factory-discontinued products:

• Model 220 Announcer's Console
• Model 230 Announcer's Console