Whelen's innovative HHS Series features Windows based programming software for full customization and configuration of all functions. Wail, Yelp, Piercer, Manual Siren, and Airhorn tones are preset standard. 37 total tones, including mechanical tones and California Yelp are built-in. Eight 10 amp relay outputs and one 15 amp relay output allow the user to control most or all of the other equipment installed on the vehicle. Standard switching and a completely redesigned molded amplifier housing, providing excellent durability. Includes the CANCTL5 Hand-Held controller standard. Operates one or two 100 watt speakers. Completely configurable by the user, these control heads are ergonomically designed for situational awareness of the officer.