... JGY-103, 12V/24V,JGK-503VALVE,copper coil, w/aluminium red pipes ,Dual tone electric air horn One pair JGY-103 ... ,12V/24V,JGK-503VALVE,copper coil,w/aluminium red pipes ,Dual tone electric air horn Product features: 1, horn ... by the vibration, low temperature, high temperature, voltage change affects4, permanent keep users set voice5, installation simple operation Our Shop address ...