16
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Model PA300 Series Electronic Siren
Federal Signal
www.fedsig.com
Operating the Unit
Radio
In this position, incoming radio messages are amplified by the siren and rebroadcast over
the outside speaker.
Manual
In this position it is possible to operate the siren by activating the HORN/SIREN switch.
The siren can also be activated by means of an auxiliary switch, such as the horn ring
button.
Wail
In this position the siren produces a continuous “wailing” sound, up and down in
frequency.
Yelp
In this position a continuous, rapid “warbled” tone is generated.
Hi-Lo (Models 690000 and 690001)
In this position a two-tone sound will be heard. This distinctive tone may be reserved for
any special indication or situation.
Priority (Models 690002 and 690004)
In this position a rapid YELP sound will be heard. This distinctive tone may be reserved for
any special indication or situation.
Horn/Siren Switch
The HORN/SIREN switch, located on the left side of the front panel, activates the
electronic air horn sound (up) or peak-and-hold sound (down) in any siren mode except
radio.
Tap II Functions
Tap II allows the driver to change the siren sound via the vehicle’s horn ring. This feature
is especially effective for clearing traffic. The chart below demonstrates how the horn ring
can be used to change the siren sound.
Table 4 TAP II Functions
Selector
Switch
Position
First Horn
Ring Tap
Produces
Second Horn
Ring Tap
Produces
Wail
Yelp
Wail
Yelp
Wail
Yelp
