... rquest's ) Fit forSLLP 55,60,64,68,77,78 double layer slats )Patented by SHINILION , COPY RIGHT IS RESERVED ( ... , 60Hz Working temperature range: -20 to +70 Working frequency: 315MHz Rolling Door Function Anti-sunlight, anti-rust, anti-lacerated , anti-mosquito ... Highest standard in China Certifcates CE,TUV,CB,RoHS,CCC Rolling door Application Widely used for security garage door , factory ...