Sigtronics SPA-4S Stereo Panel Mounted Intercom Overview:

SPA-4S Two or Four Place
FAA TSO approved.

• Pilot fail safe feature allows pilot to always hear radios.
• Use Satellite Radio, MP3 or CD players as audio source.
• Radio priority assures that ATC hears only the crew member transmitting.
• Installation hardware included, including jack kit & pre-wired harness.

Compact Stereo System
The SPA-4S is a 2 or 4 place voice activated intercom with inputs for stereo music. It is a compact system that allows it to fit in space critical panels. The SPA-4S uses the industry standard Sigtronics squelch, fast on slow off for hands free communication. The music will full mute during ATC communication and partial mute during intercom communication. When radio / intercom use is ended the music will gradually return to its previous volume.

Easy Upgrade
Each intercom comes complete with all necessary mounting hardware, jacks, and two 4-foot pre-wired harnesses. The SPA-4S only requires 1” X 2.5” of panel space, mounts horizontal or vertically, is 4” deep, and weights 5.5 oz. The SPA-4S intercom can easily upgrade the SPA-400. The SPA-4S uses the same panel hole pattern and interface cable as the SPA-400. A second cable is provided for the music inputs and headphone outputs.