One switch controls AIR HORN, MANUAL, while the other controls WAIL/YELP. Two rocker switches control all the siren functions. WAIL, Yelp, Priority, Manual, and Air Horn are all standard on the MS4000. MS4000 can be powered via the vehicle’s power center or directly from the vehicle’s battery. The MS4000 series comes with its own bracket and can be mounted virtually anywhere due to its compact size and lightweight construction. It is protected against failure models, including reversed polarity, by a fuse that can be replaced without tools. The mini-siren can operate from any 12 Vdc negative ground vehicle electrical system. MS4000 mini-sirens provides 100 W output and meets Class A requirements when paired with any Federal Signal speaker. Versatile and Compact Siren with Built-In Features Reliability is increased, and operating temperature is decreased in the design of the MS4000 with the use of advanced rail circuitry and a low-loss FET design arrangement. MS4000 offers value-packed, reliable performance with effective traffic clearing capability.
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