New in original sealed factory box — never installed or used.
Federal Signal MS4000 (MS4000 / MS4000U series)
100 Watt compact electronic mini-siren
Perfect for undercover, administrative, or limited-space vehicles
Features: Wail, Yelp, Priority (intersection clearing), Manual, Air Horn
Works with any Federal Signal 100W speaker (AS124, etc.)
12V operation, very compact size for dash or console mounting (Speaker not included)
Includes mounting bracket
Manufacturer:
Federal Signal
Condition:
NOS-Never Installed, Limited Or No OEM Warranty