1/2Pair Universal 300DB Loud Car Air Horn 12V Trumpet Super Train Horn for Trucks Vehicle Horn Dual-tone Electric Snail Air Horn

Package Included: 2x Horns 2x Brackets and Screws 1x Controller Relay OR 4x Horns 4x Brackets and Screws 2x Controller Relay Specifications: Material:ABS Colour:Blue & White Sound Level:300dB Number of different Sounds:18 Voltage:12V Frequency:Low 410Hz & High 510Hz Dimension:As the picture show Features100% brand new high quality 1. High quality, high & low tone horn 2. Long lifespan, more than 100,000 times 3. Better coverage area, immediate warning to everyone around 4. Powerful sound, 115dB and 12V power input means that no other road user will be able to ignore you when you honk this horn. 5. Unique & fashion design, have different voicesFitement: Fit All 12V Vehicle(Car,Van,Truck, SUV, Motorcycle,Yacht, Boat,off Road Vehicle, Busses etc.) Operation Guide: 1.The electronic system control the horn to transform the sound 2.Press the button continually for three time, the change of the sound is finished. 3.Repeat the above step to transform the sound continually. 4.One sound will be kept until you press the button. Wiring Guide: Red 12V positive Black 12V negative Blue Speaker Control Line Yellow Horn negative Green Horn negative