Specifications

77
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Siren/Light Control

ThePA640isaprecisionbuilt,efcientandeconomical
full-featuredelectronicsirenandlightcontrolsystem.
Thesirenprovidewail,yelp,andpriorityorhigh-lowsiren
tones as well as the horn ring transfer Tap II feature,
public address (PA), radio rebroadcast and an air horn
sound.
On-boardrelaysintheunitallowcentralizedcontroland
wiring of primary, secondary, alley lights, and auxiliary
circuits with a lighted rubberized membrane switch
assembly.AconvenientfourpositionModeslideswitch
allowssimpliedandrapidselectionofmostcommon
siren and lighting functions and changes the horn ring
function according to provide the Tap II feature.
A noise canceling microphone is provided. It provides
high quality voice reproduction without feedback squeal.
Themicrophonepush-to-talkswitchoverridesanysiren
sound for instant Public address use. PA volume is
adjustablebymeansofafrontpanelVOLUMEcontrol.
ThePA640isdesignedtodriveone11-ohmimpedance
high power (100W) speaker. The horn ring transfer
feature allows the driver to change the siren sound from
wailtoyelptopriorityhigh-lowtowail...viathevehicle’s
horn ring. This features provides especially effective
trafcclearingcapability.Eachslideswitchposition
can be individually programmed for siren dependency,
transfer of the horn ring, and selection of the no siren
tone to either airhorn or peak and hold.
To reduce standby power consumption the power output
audioandpre-ampliersarenotpoweredwhennotin
use.
Dimensions: (HWD) ............ 2.75”x6.63”x8.00”
Current Ratings for Relays:
• Total Output .............. 80A Combined Total all
Relays
• Slide Switch Options:
  Mode1 ............... 30A
  Mode2 ............... 30A
  Mode3 ............... 30Aperindividual
............................ 40ATotalMode3
• Pushbutton Switch Outputs:
  A-F ....................... 20A each

• Programmable rubberized pushbuttons with inserts.
Each pushbutton can be programmed to be either:
inactive, momentary, push on/push off, 8 second
timer,simultaneous,oralternateasher.Theash
rateisselectable,either75or120ashesper
minute. Relay pushbuttons can be attached to slide
switchpositions1,2or3.
•Thecontrolpanelisilluminatedwithnon-glare
backlighting.
•Park-SirenDeactivatorcandeactivatesirentones
when the vehicle is shifted into park.
• Siren tones can be programmed to be dependent or
independent of the slide switch.
• An electronic beeper chirps upon function selection.
The beeper is dip switch selectable to chirp every 10
seconds if a function is active.
•Thesirentonescanbeselectedbydipswitchtocut-
out or coast down when deactivated.
Order No. SR-640000 Qty.
 1-5
$
379.
95
ea.
 6+
$
359.
95
ea.
Only
$379.95