AS 100W Electronic Siren Kit ASCJB100E-SPK0021 3-Piece Pack with Siren Box Microphone PA System 8 Tones One Pack includes: 1 Siren Box ASCJB100E+1 Octangular Speaker SPK002+1 Microphone (All as the main picture shown) +Wiring Accessories+User's Guide It's a compact 100 watt police siren bundle. It contains 8 warning tones to fit for Police, Ambulance, Fire and Engineer Vehicles,etc. It can run two-channel 12V Led lights and with light switches on the main siren box. The matched pre-wired PA system is with Press to talk button on the side of the microphone.