Certifications for OSUN Brand 1. GB 15742-2001 Speaker Performance Requirement for Motor Vehicle & Testing Methods 2. QC/T 30-2004 Technical Condition of Motor Vehicle Horn 3. CCC China Conpulsory Certification 4. ECER28-93 European"Sound audible warning devices and equipment audible signal for motorvehicle,uniform conditions for approval of recognization." 5. GB15085-94 Wiper Blade Performance Requirement for Motor Vehicle & Testing Methods 6. ISO9000:2008 Quality Management System Certificate 7. ISO/TS16949:2002 Implementation. Product Charateristic 1. Strong voice--safety warning Even in the harsh enviroment,it also can keep loude voice,continuous beep up to 1 minite. 2. Long life and reliable quality A.high-quality sonorant diaphragm B.adopt membrane filter technology with waterproof and propulsive gas C.unique adherent point protection craftwork D.anti-weather material interference E. strong anti-corrosion 3. unique shape of sound port with drainage channel Stronger sound-oriented,better waterproof 4. mini compact design,can be installed vertically Even in the narrow space,it is also installed 5. relialbe for excellent quality Full implementation of ECE product standard,product specification in accordende with the original standard disign. Technical Parameter: Voltage:12V Working volt:9-15V Operating temperature:-40°C 85°C Electric current:≤3.5A Frequency:L400±20Hz H 500±20Hz Sound level:110±5dB(A) Life:150,000 times Diameter:80mm Weight:240g Carton:30 pairs Carton measurement:52.2*31.4*37cm Net weight:15kg Gross weight:16kg OSUN Brand live on quality,Quality open the world door. We believe high-end product and high-quality service is our customers'lasting choice.