Vehicle siren, electronic siren, wireless siren, Used for police car, cop car, fire fighting, ambulance EMS, wrecker, project car, sprinkler, patrol car, emergency vehicle Model: WSI150D Feature: Voltage: DC12V Power: 150W Tones: Horn, Yelp, HILO, HI-LO, Wail-1, Wail-2, Tool, High-speed PHSR, 6 seconds bass Light control: 2-ways Amplifier size: 150mm*140mm*40mm; Controller size: 95 mm*50mm*14mm