12V/24V 500DB Dual Trumpet Electric Horn Loud Chrome Air Horn Speaker Kit with Air Compressor for Train Truck Lorry HornName:Car Air Horn With Air CompressorModel:G25929SpecificationsColor:SilverVoice Coil:Copper, zinc alloyMaterial:stainless steelVoltage:12V/24VDecibel Output:500DBFeatures-Good sound quality: unaffected , low temperature, high temperature and voltage change.-This product is suitable for all models with air source device.-Easy to install, shiny chrome finish and tuned train horn sound.-Durable: High quality material, not easy to damage.-The plug has good contact: hoarse is not easy to see.-High abrasion resistance: abrasion resistance, promising long life.-The operating current of the control relay must be greater than 10A.-It has the characteristics of high sensitivity and long service life.Note-Please allow a bit error due to manual measurement. please make sure you do not mind before you bid.-The color may have different as the difference display, please understand.Package Included1 x Car Air Horn1 x Fixing Plate4 x Screws4 x Nut