... Bolt/Electric Mortise Lock /Electric Bolt Lock for Glass Door 12V, Electronic Lock for Glass Door, Electric Drop Lock 1.Type: fail ... power fails 0S,3S,6S,9S are available open lock by access control system 3S,6S,9S,15S are ... of extension bolt is 15mm 7.Shake-proof,Anti-theft:The lock can increase current to keep the latch ... intercom system. 9.The Time-delay setting for lock and unlocking are independent