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Bitwriters with a date code of 6a or older require an IC

upgrade (p/n 998M). Some Bitwriters with a date code of

6B do not require the IC upgrade, refer to tech tip # 1112

for more information.

Bitwriter®, Code Hopping™, Doubleguard®, ESP™, Fail-

Safe®, Ghost Switch™, Learn Routine™, Nite-Lite®, Nuisance

Prevention® Circuitry, Revenger®, Silent Mode™, Soft Chirp®,

Stinger®, Valet®, Vehicle Recovery System®, VRS®, and Warn

Away® are all Trademarks or Registered Trademarks of Direct-

ed Electronics.

The Bitwriter

(p/n

998U) requires chip

version 2.7 or newer to

program this unit.

Directed Electronics 4103, 4-button series User Manual

Questions and Answers: