P/N 01-1001-05 The 429EX ARINC 429 Transmitter/Receiver and Data Bus Analyzer provides avionics technicians and line maintenance personnel with an easy method for troubleshooting ARINC 429 labels and has the capability to selectively trap labels three separate ways. The unit has a non-volatile memory and features user selectable ARINC Air Transport Equipment Identifier Codes. Transmitted and received data can be viewed in either hexadecimal or easy-to-understand engineering format. The 429EX is housed in a rugged, compact case with internal, rechargeable Ni Cad batteries. It comes with either a 115 V or 220 V plug-in battery charger (please specify when ordering).