Installation hardware and prewired harness included.
Sigtronics pioneered the voice activated intercom market in 1974 and continues to deliver value and performance today in the FAA TSO approved SPA-400/600 intercom series. The SPA-400 also has radio priority to assure that the only voice heard by air traffic control is that of the crew. With the pilot fail safe feature, the pilot will always hear the radios, even if the intercom is turned off.
The SPA-400 offers either a rectangular or circular faceplate mounting configuration to fit anywhere in the cockpit. The reversible face plate included allows for mounting either vertically or horizontally in only 2 1/2 sq inches of panel space. The SPA-400 supports up to 4 headsets, while the SPA-600 supports up to six headsets. All hardware needed for installation including prewired harness is included.