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TRIG TT21 (Transponder Only) Compact Class 2 Mode S Transponder

TRIG TT21 (Transponder Only) Compact Class 2 Mode S Transponder


Tags: Avionics,Transponders & Encoders,Transponders,EACH

SKU: 00565-00-01


Chosen by pilots around the world Trig’s compact transponders are the best choice for good reason.

Fitting in the tightest panel space the innovative design saves weight and space. Trig is ‘better by design,’with Mode S technology that makes you visible to commercial, military and GA traffic, as a result transiting busy airspace becomes more predictable and stress free. Trig transponders are future proof too – the growing use of ADS-B further enhances your visibility and flight safety. Unlike other brands Trig transponders meet the very latest certification standard for ADS-B, FAA TSO-C166b.

Designed to be easier to use, with a clear bright display the controller even comes with a built in altitude encoder!  Join other pilots who have made Trig their compact transponder of choice – you’ll be in great company.

This TT21 Mode S transponder includes the transponder unit and mounting tray only. For the complete kit see PN: 00710-00.


  • Transponder unit
  • Mounting tray
  • Install kit
  • Installation and user manuals
  • EASA form 1


  • Class 2 Mode S and 1090ES ADS-B Out capable
  • 130 watts nominal output power
  • Certified for IFR / VFR flight
  • FAA TSO Certification – TSO-C166b the latest ADS-B standard
  • Free FAA ADS-B STC for 576 aircraft types
  • Two year warranty from date of install, U.S. based technical support