2011 hot sale electronic lock 1.Certification:CE,Rohs,FCC ... Lowest factory price 4.Sample is welcom 2011 hot sale electronic lockCertification: CE, Rohs, FCCWarranty: 3 to 5 ... lowest among the similar lock. Description:1.Using electronic security technology and gate lock combined; 2. ... according Positive and negative. Notes:1. The electronic security technology combined with rolling shutter door.2. ...