Bitwriter®, Code Hopping™, Doubleguard®, ESP2™, FailSafe®,
Ghost Switch™, Learn Routine™, Nite-Lite®, Nuisance Prevention®
Circuitry, Revenger®, Silent Mode™, Soft Chirp®, Stinger®, Va-
let®, Vehicle Recovery System®, VRS®, and Warn Away® are all
Trademarks or Registered Trademarks of Directed Electronics.
Bitwriters with 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
The Bitwriter® (p/n 998U)
requires chip version 2.7 or
newer to program this unit.