Stereo Panel Mount Intercom SPA-4S Two or Four Place Intercoms 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. SPA-4S Two or Four Place 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. SPA-4S Parts 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. High Noise Environment N Series The FAA TSO approved SPA-4SN is available for the high noise amateur built aircraft and helicopters. As with all of Sigtronics’ products, the SPA-4S / SPA-4SN are RFI and EMI immune. The SPA-4S intercom is constructed of high quality components and carries a five-year parts and labor warranty. The SPA-4S will operate on an input power of 11 VDC through 32 VDC. Maximum current drain 0.10 Amps.
