Federal MS4000 100 Watt Siren One of our BEST compact digital sirens ever! Small, thin, and lightweight. This siren delivers! Features: Wail, Yelp, Air Horn and Manual tones. Comes complete with mounting brackets. VERY easy to install! Measures: 6”W x 1.5”H x 5.5”D. Model MS4000 MS4000Regular price: $209.99Sale price: $179.99 Customer Pays All Shipping Charges. Pay securely with your Visa, Master Card, Discover/Novus or PayPal with our easy checkout! Note: Purchase orders will be accepted only by municipalities and pre-approved before check out completion and Purchase Order Number received. All others will be immediately rejected and transaction voided. Place your order by Internet, Phone or stop by our Store for the same low internet prices!