... circuits and digital se bike alarm lock,alarm lock,bicycle alarm lock Insert key and turn to open the ... a warning tone. Feature(1).Used on: Fit for bicycle, motorcyle, electrombile,door and so on.(2).Design Principles: ... : 57x 200mm(5) Lock diameter:14mm(6) Package: 24 pcs(7) Net Weight: 1250g Note:Dismantle screw only for ... Other abnormal situation. bike alarming lock,alarming lock,bicycle alarm lock