TRIG is avionics producer, which is known thanks to S-Mode transponder TRIG TT31. TT31 is possible to use instead of BENDIX/KING transponders. It can be connected to GPS signal source TRIG TN70 or other GPS including GARMIN GNS, which enables using new system ADS-B.
Besides this model, TRIG offers another transponders types and aircraft radio stations.