This listing is for a preowned Whelen 295HFSA1 self-contained siren. Capable of 100 or 200 watt siren operation, this siren offers the standard Whelen Wail, Yelp, Phaser, airhorn, and manual tones. It also has a Hands Free operation for tying it into your vehicle's horn. The siren includes a PA mic and the harness required for wiring. There are no other accessories included.