The Siren Horn Speaker System from Pyle Pro is a high-powered speaker with handheld microphone PA used for vehicle alarms, security systems, and more. It features a wired handheld microphone control unit and emergency sounds for alerting and warning, with six selectable audible tones to choose from. You can hear the alarms from up to 350' away. The system is rugged and durable in design and has integrated connection cables for quick setup.