Power Connections
Before plugging in the 12VDC power supply to a wall outlet, connect the appropriate wires on the cable assembly to the
power supply (FIGURE 4).
If using one of the five disk-shaped UAL connectors, neither wire should be stripped of its insulation. Insert the wire from
the power supply positive lead marked (+) into one of the three small grooves. Push the wire all the way to the end of the
connector. Take the red lead coming from the connector on the back of the Vehicle Alert console and push it into the other
hole in the UAL connector. If using a remote buzzer (Model BZ-1), its positive connection should be made here, as well.
Using pliers, squeeze the disk until it is firmly seated into the bottom of the UAL connector. Repeat using the negative (-)
lead of the power supply and the black lead of the console connector. The other leads on the connector are used for the two
Form A relay outputs, which come standard with the Vehicle Alert. These two relays can be used to trip other devices such
as additional buzzers, X-10 devices, etc. If at this time you do not intend to use these optional accessories, cover the unused
wires with tape to avoid shorting to the circuit board.
Probe Connections
Connect the wires from the probe to the 3-position terminal block on the back of the Vehicle Alert console (FIGURE 5).
Connect the bare drain wire to the terminal marked “G”. Connect the red and black insulated wires to either of the two
remaining terminals marked “S”. It makes no difference which wire, red or black, connects to which “S” terminal. The ground
terminal marked “G” on the console should be grounded to a cold water pipe or a copper ground rod. If neither is available
do not connect to AC power ground. FAILURE TO GROUND THE UNIT WILL INCREASE THE POSSIBILITY OF FALSE ALARMS. See
Probe Grounding on page 9 for important information on proper grounding.
Final Checkout
Plug the power supply into a 120 VAC outlet. When power is first applied to the VAL, both the green “Exit Delay” light and
the green “Power On” indicator will be lit. It will take about six minutes for the Exit Delay light to go out and allow the unit
to become active. With the Exit Delay light off, the buzzer should sound when the “Test” button is pressed. If the duration of
the buzzer is too long or too short, it can be adjusted by carefully inserting a small slotted screwdriver into the designated
opening located on the front of the VAL console. Rotate the control to adjust the “Buzzer Duration” from 1 to 18 seconds.
Have someone move a steel shovel or other iron or steel object over the probe while you listen for the buzzer at the console.
The buzzer should sound once or twice each time the probe is activated. Remember, if the Exit Delay light is on, the alarm
will not sound. Next, have someone drive a vehicle past the area to be monitored. Check to see if the probe is far enough
away from traffic areas that you do not want monitored or other sources of magnetic fields that may cause false alarms to
occur. Adjust the “Probe Sensitivity” control (FIGURE 6) located on the front of the VAL console, as necessary. To adjust this
control, carefully insert a small slotted screwdriver into the opening and rotate the control. When the Vehicle Alert console
leaves the factory, the control is adjusted for maximum sensitivity (fully clockwise). To decrease the sensitivity, rotate the
control counterclockwise. To help reduce false alarms, it is recommended that the sensitivity level be set to the minimum
level needed to detect a vehicle. If the probe does not cover the area desired, you may need to move the probe closer to the
driveway or add a second probe (FIGURE 3).
6
7
To Power Supply or
other 12VDC source
Accessory
Relay Output
Accessory
Relay Output #2
Figure 4
Figure 5
12VDC
POWER SUPPLY
12 VDC
POWER SUPPLY
Figure 6
