Operating instructions

VOLUME CONTROLS

Radio Repeat Volume - The radio repeat

volume is recessed on the front face of the

amplifier next to the communication jack.

This should be set when the vehicle is

parked. First set the volume level o f the

vehicle’s two-way radio to its normal

operating volume. Adjust the siren’s rotary

selector switch into the RADIO position.

Insert a small, flat blade screwdriver into

the RADIO volume adjustment port. Turn clockwise

direction to increase the sound level.

PA Volume - The PA volume control is provided for

public address volume. This is located in the upper

right hand corner of the control head. It should be set

when the vehicle is parked. Set the PA volume to the

maximum level with no feedback (squeal).

MICROPHONE

The attached noise-cancelling microphone is used for public address operation

and overrides any siren tone when it’s push-to-talk (button on the side) is pressed.

AUXILIARY INPUT

During installation an auxiliary input may be connected to the vehicle horn ring

or other switching device. It provides the same operation as pressing the Horn

button or optionally (via internal jumpers) the Manual (MAN) push-button.

PARK KILL (CUTOUT)

During installation, the Park Kill input may be connected to a door switch. It

will automatically turn off any siren tone when the door is opened. The siren tone

will continue to be cut off even when the door is closed. Changing any switch or

input will restore normal function.

SPEAKER DIAGNOSTICS

There are two diagnostic LED’s located in the

lower left hand corner of the control head. These

LED’s will only turn on while a tone is trying to be

generated. Status of the speakers are indicated as

follows:

Steady - Speaker is connected and operating properly.

Flashing - There is an electrical short in the speaker or wires to the speaker.

Off - No speaker is connected, or

- The siren is not activated to output a tone to the speaker, or

- The speaker or wire connection is loose or is electrically open