Overview

CANBUS allows the Directed system to communicate with the vehicle via high speed digital data, through either a single wire or a twisted pair, which ensures a robust connection with minimal wiring connections to the vehicle.  Connection to the CANBUS eliminates the need for many of the analog necessary in traditional, hard-wired, security systems cutting the installation time, in many cases, down by as much as 50%. CANBUS communicates with most of the electronic security and convenience systems throughout the vehicle, so the alarm remains in-sync with the vehicle at all times.

When the vehicle is equipped with a factory security system, it works in sync with Directed CANBUS security system and all factory functionality is retained.     

The 3903T is the most advanced and sophisticated CANBUS upgrade alarm on the market. The 3903T  is the result of many years of research and development by Directed Electronics International (DEI). DEI is the largest car security manufacturer in the world and have custom designed this compact alarm system to not only interprete vehicles CANBUS network but to communicate with it. This gives the Viper system the ability to read and interpret all the alarm requirements whilst being able to control the data network in the car and operate particular features such as the blinkers, windows and ignition system through the connection of only 1 or 2 wires.

This design makes the system very simple to install covertly and with minimal intrusion to your vehicles wiring system. It

Directed Electronics / Viper have specifically designed firmware for every vehicle ensuring seamless integration to each vehicle. In some cases the 3901T can even unlock additional factory optional features such as automatic window closing when you activate you alarm.

3903T High Speed CAN OE Security Upgrade System. (programmable) Use the OEM keyless entry remote to control arm & disarm of upgrade security via the CAN BUS. *Some features not available on all vehicles

Glossary of Terms

The following terms are listed to assist you in defining the technologies your selected Viper system includes. Please note, not all Viper systems feature all of the following technologies, these descriptions are provided as a glossary of various Viper technologies for reference only.

• Single Immobilisation Point 
• Bonnet,Boot and Door Protection
• Built in Doubleguard Shock Sensor
• Battery Back-up Siren (Pictured)
• Coloured Wires
• Failsafe Starter Kill 
• Superbright LED
• Parking Light Flash
• Horn Honk Output
• AUX Output
• Optional Sensor Input (MUX) Port
• Ground when Armed Output
• Long Term Event History
• Rapid Resume Logic
• Multi-Level Security Arming
• Compact Design 15mm x 20mm x 13mm
• LIFETIME Warranty

Programmable Features

• Arm/Disarm Chirps
• Horn or Siren Function
• Siren Duration
• Light Flash Confirmation
• Parking Light Supervision
• Light Output Parking or Blinkers
• Automatic Rearming
• Nuisance Prevention Circuitry
• Multi-Level Arming
• Progressive or Instant Trigger
• One Time Valet