Professional 150W and 300W vehicle sirens

Professional sirens are control and amplifier units for audible warning systems on emergency and special-purpose vehicles. The range includes 150W and 300W versions for both 12V and 24V electrical systems. All current models provide a microphone with bullhorn function, six warning tones and connections for external devices. First select the correct vehicle voltage and system power, then match a high-pressure speaker or speaker set in accordance with the manufacturer's instructions. Installation requires correctly sized and fused power wiring, protected cable routing and a speaker location away from excessive heat and mechanical hazards. ECE R10 approval confirms electromagnetic compatibility; it does not itself authorise the use of a special audible warning signal. The siren may only be used by authorised vehicles and under the conditions of the applicable regulations. Do not test it in an enclosed space or near people without hearing protection.