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Installation Notes
Proper installation of the unit is essential for years of safe, reliable operation. Please
read all instructions before installing the unit. Failure to follow these instructions can
cause serious damage to the unit or vehicle and may void warranties.
Qualifications - The installer must have a firm knowledge of basic electricity, vehicle
electrical systems and emergency equipment.
Keep These Instructions - Keep these instructions in the vehicle or other safe place
for future reference. Advise the vehicle operator of the location.
UNPACKING
Inspect the contents for shipping damage. If found, alert the carrier immediately.
Contents should include:
Please contact your supplier immediately if any of these components are missing.
Another feature allows cycling through Wail, Yelp, Phaser and Standby by providing
a signal to the horn ring auxiliary wire when the function switch is in the Hands Free
(HF) position. A Park Kill option is provided for connection to a door switch, etc. to
disable the siren when exiting the vehicle. The PA volume control is provided on the
front panel of the control head, while the Radio volume is on the amplifier box. The
front panel is backlighted with LED’s for night visibility. This compact unit utilizes short
circuit, high voltage, low voltage, and reverse polarity protection systems for
maximum service life.
The SS741MG unit is designed to allow maximum versatility in mounting. The control
head is remote from the siren amplifier box creating a compact user interface plate
that can be flush mounted into the dashboard. The amplifier box can then be
mounted remotely in the trunk, under the dashboard, under the seat, or wherever
convenient.
The siren amplifier has been designed with several protection features to provide
exceptional field service. Excessively high or low voltage detection will disable the
siren output to protect both the amplifier and the speaker. Fused inputs provide
safety against reverse polarity. Speaker diagnostics provides user feedback as well
as shutdown protection if the speaker output becomes either electrically open or
shorted. The two separate independent amplifiers allow redundancy backup,
should one speaker short out during operation the other amplifier and speaker will
remain fully operational. CAUTION: These protection features will not guard against
overloading the outputs.
The SS741MG unit is available in the following different versions:
SS741MG Standard version w/ microphone mounted to the face plate.
SS741MGX Remote microphone connected to the back of the control head via
an extension harness.
SS741MG-TEC Standard Version with reversed 7-position knob functions.
(1) instruction booklet
(1) amplifier box
(1) control head with microphone
(1) microphone bracket w/(2) screws
(1) amplifier wire harness with connector
(1) communication cable
(telephone-style cable)
(2) control head power wires
(General Description CONT’D)
