Measuring only 1" x 2-1/2" x 4" deep, only 4.5 oz, the SPA-400 and 6-place SPA-600 are FAA Tso'd and can be mounted either horizontally or vertically. Also available in special "HIGH -NOISE" model SPA-400N for Ultra-lights, and open cockpit aircraft, kit aircraft and warbirds. These intercoms allow you to put "push-to-intercom" buttons in the aircraft to eliminate VOX mode when desired.
This is especially good for open-cockpits where wind noise can be a problem. The SPA-400N simulates side-tone because some radios that are currently used in these markets do not have it. The SAS-440 and SAS-640 intercoms feature Sigtronics' exclusive "Auto-Squelch". One touch of the squelch button and the intercom perfectly sets the squelch level to your headsets and the aircraft noise level. All Sigtronics intercoms are voice activated with a 5-year warranty and operate on any voltage from 12V to 24V. Made in USA.
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
The SPA 400 is for a 4 seat aircraft. The SPA 600 is for a 6 seat aircraft.
No, if you require certification paperwork, please request it at checkout.
No, the Sigtronics SAS-440 is non TSO'd.
The SAS 440 is a non TSO'd item that uses a push button for the auto squelch instead of the knob like the SPA 400, the SAS can be made to order but is no longer in production. The SPA 400 is TSO'd and uses a knob for the auto squelch.
Per the manufacturer: All installation hardware including jack kit and pre-wired harness are included.