24v 400 500hz dual voice disc horn

{"cid":"91223405","title":"24V Dual Voice Disc Electric Horn Bus Truck 400-500Hz 720h Salt Spray Continuous Operation Bus Spares","imgUrl":"https:\/\/img.chinax.com\/nimg\/c5\/ba\/70452fcd7c944994382e7ecfb623-200x200-1.jpg","attrs":{"Price":"$7.50\/pieces 5-49 pieces","Brand Name":"Gujiu","Model Number":"LB-PXSY","Minimum Order Quantity":"1","Delivery Time":"7-15day","Certification":"GB 15742+ECE R28","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"5000\/month","Packaging Details":"Carton, wooden box, custom packaging","Dual frequency superposition":"High frequency (400-500Hz) + low frequency (200-300Hz)","durability test":"Continuous operation for 100 hours without failure","Packaging":"Carton, wooden box, custom packaging","Surface galvanizing":"Salt spray test \u2265 720 hours","voltage":"24V (wide voltage 18-32V)","Accessory type":"Dual tone electric speaker","International certification":"GB 15742+ECE R28","operating temperature":"-40\u2103~+85\u2103","response time":"\u22640.1 second","sound pressure level":"120\u00b12dB","Model":"LB-PXSY","Protection level":"IP67"}}