Whelen's innovative HHS Series features standard switching and a completely redesigned molded amplifier housing, providing excellent durability. Various control heads are compatible with the HHS Series. Completely configurable by the user, these control heads are ergonomically designed for situational awareness of the officer. Meets Class A requirements of SAE, AMECA, KKK1822, and California Title XIII when paired with one Whelen 100 watt speaker Windows based programming software for full customization and configuration Three control heads available Two year warranty AMPLIFIER MODULE Durable Black molded housing Wail, Yelp, Piercer, Manual Siren, and Airhorn tones are preset standard 37 total tones, including mechanical tones Includes 20' interconnect cable External spade-type fuses Size: 7.46" (18.95cm) H, 8.49" (21.56cm) W, 2.35" (5.97cm) D 4200 Eight 10 amp relay outputs and one 15 amp relay output Includes WeCan port that supports the Inner Edge FST and RST Series, WeCan lightbars, or WeCan external amplifier Operates one or two 100 watt speakers