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SCI-S Pilot Isolate Stereo Panel Mount Intercoms

  • FAA TSO approved.
  • Use Satellite Radio, MP3 or CD players as audio source.
  • Dual Volume and Squelch Controls.
  • Reversible face plate included for vertical or horizontal mounting.
  • Installation hardware included, including jack kit and pre-wired harness.
  • WARRANTY: Five years parts and labor.
SCI-S6 Intercom

Dual Everything!
The Sigtronics four and six place SCI-S Series intercoms are voice activated stereo Intercoms with dual volume, squelch and three modes of operation: All, ISO, and Crew.

Dual Music Inputs
Pilot / Copilot and passengers can choose their own music and have it automatically muted with incoming radio traffic or when the intercom is used. Use Satellite Radio, MP3 or CD players as your audio source with stereo headsets for true stereo sound. When radio / intercom use is ended the music will gradually return. With the dual volume controls you control the volume of both front and back seats from one position. We have also added the extra volume you wanted. The dual squelch controls let you set the squelch of the front and back seats, and with dual squelch indicator lights you know instantly which position to adjust – no more guess work.

Pilot / Crew Isolate
Use pilot isolate ( ISO ) to allow the pilot alone to talk to ATC, and crew isolate ( Crew ) to talk to your copilot while your passengers enjoy their own conversation or music. Use the All switch position to allow everyone to talk together. And like all Sigtronics intercoms, the SCI-S Series has our exclusive fail-safe feature. By placing the intercom in the ISO mode of operation, the pilot's microphone and headphone are routed directly to the aircraft radios.

Small Size
You will only need a 1" by 2.5" panel space for this powerful intercom that can be mounted either horizontally or vertically. By using your existing interface cable and a second pre-wired harness for music inputs and headphone outputs, the SCI-S is designed to make upgrading from a SPA-400 / SPA-600 easy with a minimum of rewiring. All hardware including new stereo headphone jacks are included with this easy to install intercom.

RFI and EMI Immune
We engineer all of our products the right way to prevent RFI and EMI interference, no need for expensive shielded cable to make up for poor design. SCI FAA TSO approved Series intercoms carry a 5 year parts and labor warranty.

Upgrading from a SPA-400 or SPA-600 to a SCI-S4 or SCI-S6 is easy. See our Upgrade Overview information below for the wiring changes. In Adobe PDF format.
Model: SPA-400 to SCI-S4 Upgrading a SPA-400 intercom system.
Model: SPA-600 to SCI-S6 Upgrading a SPA-600 intercom system.

Features SCI-S4 SCI-S4H SCI-S6 SCI-S6H
Headset Positions: 4 4 6 6
High Noise: No Yes No Yes
Size: 6" x 2.5" x 1" 6" x 2.5" x 1" 6" x 2.5" x 1" 6" x 2.5" x 1"
Weight Unit: 7.3 oz. 7.3 oz. 7.5 oz. 7.5 oz.
Weight Jacks/Harness: 6.0 oz. 6.0 oz. 6.0 oz. 6.0 oz.
Warranty: 5 Years 5 Years 5 Years 5 Years
Price: $514.00 $548.00 $547.00 $582.00

SCI Faceplate

Adapts all SCI Intercoms to standard 2.25 inch round instrument hole.
Part Number: 900090
Note: As the knobs overhang the faceplate, check panel clearance for your installation.
Price: $17.60

Sigtronics SCI Intercom faceplate

SCI-S4 / SCI-S6 PDF Instructions
Installation Instructions
Models: SCI-S4 and SCI-S6
Panel Mount Intercom with Dual Stereo Music Inputs, Pilot Isolate, and Crew Isolate.
Operating Instructions
Models:SCI-S4 and SCI-S6
Panel Mount Intercom with Dual Stereo Music Inputs, Pilot Isolate, and Crew Isolate.
SCI Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Radio Keyline Modification
Model: SPA, SDB, SCI and Sport Intercoms
For KMA-20 Audio Panels and ICOM A220 Radios.

Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Audio Panel: King KMA 24 Audio Panel
Radio: Garmin GNC250/XL
Radio: Terra TX760D