The AVI transmitter is a 4” diameter electronic device that continuously transmits an identification code. The device is attached to the bottom of any vehicle and is encased in a hard potting compound to make it impervious to road damage. The transmitter will transmit continuously as long as 12 VDC is supplied.

The code that is transmitted is stored in internal EEPROM. Even though the unit is completely sealed and has no protruding DIP switches, the unit is programmable.

All units will be programmed at the factory to the required code before shipment for immediate installation.

  • Has over 19,000 programmable codes

  • Uses standard 12 VDC common on most vehicles

  • Completely encased to prevent damage from the road

  • No switches to set
Automatic Vehicle Identifier A New Plug and Play Security Device from Diablo Controls Overview
The Diablo Controls AVI system consists of a transmitter mounted to the underside of a fire engine, police car or other vehicle. The transmitter continuously transmits a coded signal. When this vehicle approaches a gated area, the code is received by a loop buried in the ground ahead of the gate or barrier. If the code read by the receiver matches a pre-programmed stored code in the receiver, a relay contact is closed indicating a valid match. This signal is then passed on to the gate controller which automatically opens the gate or performs some other security function.
  • Can be programmed to one of over 19,000 codes
  • Operates on 10 to 30 volts AC or DC
  • Can be field programmable
  • No switches to set
Description
The receiver is the “smarts” of the system. It receives a coded message coming from a transmitter mounted under the vehicle when passing over a roadway loop buried in the ground. If the transmitted code matches the pre-programmed code stored in the receiver a relay contact is closed and a red LED is illuminated indicating a valid code is being received.
Diablo Controls AVI Receivers are shipped in one of two configurations:
  1. The device is typically shipped from the factory already programmed to receive the proper code. This facilitates ease of use and installation. No switches to set. Just connect to the loop and apply power. It’s as simple as that.
  2. A second option is to order the receiver unprogrammed. An unprogrammed receiver is ready to accept the first valid code it receives. Once this code is received, it is written to the internal EEPROM and the device will only accept this code from then on. If the Red Led is flashing at approximately once per second, this indicates the unit is in this “reset” mode and will be programmed from the first transmitter is will receive a signal from.Note: This gives the user flexibility in areas where different codes are being used and the user would like to program the receiver at a later date. However care must be taken when programming these devices as if they are programmed in the field incorrectly, they will have to be returned to the factory to erase the stored code.

  3. Outputs: Two isolated N.O. 1 Amp relay contacts are supplied to supply the user with multiple control outputs for ancillary equipment.
    Indicators: Separate Power (Green) and Valid Code (Red) LED's
    Size: Height: 1.5” Width: 2.9” Depth: 1.56”
    Connector: Removable 8 position terminal block. Pin assignments are: 1 - Output relay A common 2 - Output relay A (N.O. - closes for valid code) 3 - Output relay B common 4 - Output relay B (N.O. - closes for valid code) 5 - Power common 6 - Power in (10 to 30 Volts AC or +DC) 7 - Loop input 8 - Loop input

    Operating Temperature - -35°F to 165°F (-37°C to 74°C)