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Technical Specs and Approvals

Approvals: SAE J1849 / July -02 compliant
CCR (CAC) Title 13 Class A
Input Voltage: 11 VDC to 16 VDC
Standby Current: 0mA (ignition off)
150mA (ignition on)
Operating Current: 9.25A (@ 13.6V with 11-ohm load, amplifier in wail)
Operating Temperature: -30˚ C to +65˚ C
Voltage Output (approx.): 64V peak-to-peak
Total Current Rating for Relay: 80A Combined Total – all relays
Slide Switch Outputs: Mode 1 (30A)
Mode 2 (30A)
Mode 3 (30A), (40A combined total)
Push-button Switch Outputs: 20A each
Dim. (W x L x D): 6.8 in x 3.0 in x 7.8 in (17.3 cm x 7.6 cm x 19.7 cm)
Ship Weight: 6.0 lbs (2.7Kg)


Audible Equipment may produce LOUD sounds necessary to request the right-of-way. Audible equipment may cause hearing damage. Wear hearing protection. Refer to the Installation Manual or call 800/433-9132 for further instructions.

Important Warning for Police Boats and Fire Rescue Boats

It has come to our attention that police boat and fire rescue boat sirens and speakers may subject persons operating those craft to sound pressure levels that can cause permanent hearing loss. We recommend that speakers be located as far forward on the boat as possible, as recommended in the SAE Recommended Practice J1849 "Emergency Vehicle Sirens". However, unprotected exposures of a sufficient duration to properly located siren speakers can still create a risk of hearing loss.

It is our recommendation that your siren speakers should be relocated and persons operating these craft should wear hearing protection when using the siren system.

Failure to comply with these recommendations may result in temporary or permanent hearing loss to operators and passengers of these vehicles.

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Federal Signal’s popular PA640 siren is the most reliable, most versatile totally enclosed siren/light controller.  PA640 sirens provide 100-watt output and will meet Class A and SAE J1849 requirements for sound when paired with any Federal Signal high-output speaker.

Wail, Yelp, Priority or Hi-Lo, Manual Peak-and-Hold, and Air Horn, are all standard tones and can be enabled by a heavy-duty five position rotary switch. Every siren comes with its own mounting bracket, hard-wired microphone and is electronically short circuit and reverse polarity protected.

This compact siren is packed with standard features, built-in versatility and product reliability that simply can’t be matched.

  • Combined light/siren controls with PA and microphone
  • 100-Watt SAE J1849 and Class A output
  • Internal programmable siren functions
  • Four-position progressive slide switch
  • Six backlit and rubberized relay push-button switches
  • Scrolling TAP II intersection clearing feature