This system has been modified from the standard Artex ELT system to interface with Boeing's Master Caution System and the 455-6501, ELT to NAV Interface. The system is approved for use on all models of the 737, 747, 757, 767 & 777. The system includes: Transmitter, High Speed Blade Antenna, Horn/Buzzer, Installation Kit and Mounting Bracket Assembly, Coax Cables, Manual and Drawings. For 737 installations a Zeus mounted remote panel is also required, P/N 453-0161. The B406 is COSPAS/SARSAT, FAA TSO C126, & JTSO-2C126 & Boeing Approved.