Viper 4811V Owner's Manual page 27

Bitwriter®, Doubleguard®,
Routine™, NPC®,
Revenger®, Silent Mode™, Soft Chirp®, Stinger®, Valet®,
and Warn Away® are all Trademarks or Registered
Trademarks of Directed®.
The
998U)
version 2.7 or newer to
program this unit.
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.
ESP®, FailSafe®,
Nuisance Prevention
Bitwriter ® (P/N
requires chip
Learn
Circuitry®,