Federal Signal MS4000U

This Federal Signal MS4000U is a high-quality siren, bell, and alarm speaker that is perfect for use in any facility. With its powerful output and durable construction, it is designed to provide reliable and effective alarm systems for any business or industrial setting.

Whether you are looking to improve the safety of your facility or simply need a top-of-the-line siren, bell, or alarm speaker, this Federal Signal MS4000U is the perfect choice. Its brand and model are well-known for their quality and dependability, making it an excellent investment for any business or organization.

MS4000 is a value-packed, reliable, compact siren with effective traffic-clearing capability. The design of the MS4000 enhances reliability and reduces operating temperature through advanced rail circuitry and a low-loss FET arrangement.

MS4000 mini-sirens provide 100 W output and meet Class A requirements when paired with any Federal Signal speaker. The police siren can operate from any 12 Vdc negative ground vehicle electrical system. It is protected against failure models, including reversed polarity, by a fuse that can be replaced without tools. The MS4000 series comes with its own bracket and can be mounted virtually anywhere due to its compact size and lightweight construction.

MS4000 can be powered via the vehicle’s power center or directly from its battery. WAIL, Yelp, Priority Siren, Manual, and Air Horn are all standard on the MS4000 siren. Siren activation is made simple with two rocker switches controlling all the siren functions. One switch controls AIR HORN, MANUAL, while the other controls WAIL/YELP. 

A built-in intersection-clearing feature adds effective traffic management capability at potentially hazardous crossings. When the MS4000 is activated and in the WAIL position, depressing the momentary switch to the MANUAL position produces an 8-second Yelp tone. When the MS4000 is activated and in the YELP position, pushing the momentary switch to the MANUAL position produces an 8-second Priority tone.

The MS4000U is designed for undercover police officers and volunteer firefighters. Siren functions are activated in the same manner as the standard MS4000, but the MS4000U mini-siren is activated with switches mounted on a small, remote switch panel