Motor-driven vehicle sirens and trumpets

Motor-driven sirens and trumpets produce a strong warning or characteristic tone using an integrated electric motor. The current range includes compact metal sirens rated at approximately 110 to 118 dB and chrome trumpets around 225 mm long. The 12 V models suit passenger cars and vans, while 24 V versions are intended for trucks and machinery. Compare supply voltage, current draw, dimensions, sound level and available mounting space; a larger trumpet needs sufficient depth and firm support. Products in this category are mainly motor-driven and therefore do not require a separate air compressor. Size the electrical circuit for the product’s current draw and use suitable protection and a relay where required. Before installation, check whether the selected sound and its intended use are permitted for the vehicle and operating environment.