... Electric Dead Bolt/Electric Mortise Lock /Electric Bolt Lock for Glass Door 12V, Electronic Lock for Glass Door, Electric Drop Lock 1.Type: fail safe ... fails 0S,3S,6S,9S are available open lock by access control system 3S,6S,9S,15S are available general ... used with access control system and building intercom system. 9.The Time-delay setting for lock and unlocking are independent Electric Drop Lock for ...