This best-selling blind altitude encoder offers superior quality and accuracy. The encoder converts altitude pressure obtained from the aircraft pneumatic static system into digital output. It is compatible with all ATC transponders and provides altitude reports to 30,000 ft. Includes installation manual, wiring harness, hose & fittings. Meets FAA TSO C88A Size: 3.5″x 2″x 4.75″ Wt: 6.4 oz. 3 yr Mfg warranty. Cable sold separately.