Whelen 12v 200w Siren Model:295sl100 Tactical Military Speaker System on 2040-parts.com

Here is a Tactical Military Whelen Siren that works good and has been tested. They use these in military vehicles. The power adapter can be found online for fairly cheap if you are not electrical savvy. I have one of these in my truck and its awesome. It does all the cool police/emergency siren sounds and has a squelch button.

Here are all the researched details:
Full function siren plus radio repeat and public address. Operates up to two 100 watt speakers. Includes Hands- Free operation and Scan-Lock™ siren tones. Self-contained unit for under-dash mounting. Two models to choose from; hard-wired microphone or removeable microphone with a volume control knob. Two year warranty. Backward compatible to the original 295HF100 and WS2100 Series connector.e microphonewith a volume control knob.Two year warranty.Backward compatible to the original 295HF100 andWS2100 Series connector

Features:
• 17 Scan-LockTM Siren Tones to choose from (Pat. # RE38,795).
• The 295SL allows for user select-able siren tones via momentary recessed switch located on the rear of the unit.
• Choose the placement of each siren tone on rotary knob for complete user customization.
• Economical six function siren plus radio repeat and public address.
• Meets California & SAE specifications, SAE J1849 & California Title 13.Model 295SL100
• Operates up to two 100-watt speakers."Hands-Free" operation.
• Turn On/Off and access all three siren tones (default Wail, Yelp and Piercer™) without taking hands from steering wheel
• Two manual functions allow for additional siren tone choices when you need it the most.
• PTT (push to talk) switch on microphone overrides all siren functions.
• Combination On/Off and horn ring transfer switch.
• Pre-wired unidirectional microphone.
• Optional plug-in microphone with volume control knob.
• Adjustable preset microphone volume.
• Adjustable preset radio repeat volume.
• Input polarity protection.
• Output short circuit protection.
• External spade-type fuse.
• Bi-polarity horn/ring control activation.
• "Aux Enable" activates siren tones via input (slide switch, power controls or relay-to-ground connection).
• Quick disconnect plug for ease of service or replacement.
• Adjustable bail bracket allows the mounting of the siren in a variety of positions.
• Complements all Whelen's under dash products.
• Backward compatible to the original 295HF100 and WS2100 Series connector.
• Optional 24 volt DC model available, contact factory

Specs:
INPUT VOLTAGE ................................10-16
• VDCPOLARITY ...................................Negative ground
• POLARITY PROTECTION......................Diode / Fuse
• OUTPUT POWER ...............................(2) 100 Watt Speakers
• OUTPUT LOAD....................................Two 11 OHM Speakers
• INPUT CURRENT.................................0 MA (OFF)
• STANDBY CURRENT............................100 MA (max) (backlight off)
• BACKLIGHT CURRENT ........................150 MA (max)
• OPERATING CURRENT.........................16 AMPS (max)
• FUSE .................................................20 AMP auto fuse
• FUSE MOUNTING ................................Rear Panel
• OUTPUT SHORT PROTECTION..............Fuse
• AUDIO FREQUENCY RANGE.................300Hz - 10000Hz +/-3dB
• DISTORTION .......................................5% @ 1KHz @ 25 Watts
• RADIO INPUT IMPEDANCE ...................1500 OHMS
• HORN / RING CONTROL ......................+/- 12 VDC or ground
• OPERATING TEMPERATURE .................-30 / +80 Degree C
• OPERATING HUMIDITY.........................99% non condensing
• CONNECTOR ......................................12 pin AMP Mate-N-Lok®, 24" pigtail wires

Available Supporting/Installation documents online:

Product Bulletin: ProductSheets - Sirens Switches Speakers - 295SL Siren Series
Install Guides For: 295SL100
Install Guides For: 295SL101
Install Guides For: WPKM1