Sigtronics SPA-4S Stereo
Panel Mount Intercom

The SPA-4S is a 2 or 4 place voice activated intercom with inputs for stereo music. It is a small, 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. 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. The SPA-4SN is available for the high noise amateur built aircraft. As with all of Sigtronics products, the SPA-4S it is RFI and EMI immune.

VOICE-ACTIVATED:
Based on the "industry standard" SPA-400 squelch, fast on slow off for hands free communication

FAIL-SAFE:
By turning the intercom OFF, the pilot's microphone and headphone are routed directly to the aircraft radios. STEREO OR MONAURAL
The SPA-4S can be used with stereo or monaural headsets, selectable at the time of installation.

MUTING LEVELS:
The music muting level during intercom communication can be selected at the time of installation for none, full, and partial levels.

INPUT POWER: 11VDC through 32VDC Maximum current drain 0.10 Amps

WEIGHT: SPA-4S intercom 5.5 ounces, wiring harness and jacks 7.0 ounces.

SIZE: Panel 1" X 2.5". Chassis 1" X 2.5" X 4". Can be mounted vertical or horizontally.

WARRANTY: The SPA-4S intercom is constructed of high quality components and carries a five-year parts and labor warranty.

Shipping Weight 5lbs.

Sigtronics S-AR Aviation Headset
Active Noise Reduction Stereo / Mono Headset
When we set out to make a great active noise reduction headset, we were determined not to compromise on its passive qualities.