... Lock : 203*33.5*42.5mm 2.Delay locking setting 3.Working voltage: 12VDC~24VDC 3.ISO9001: ... safe (unlock when power fails) 2.Time delay locking setting: unlock by power fails 0S,3S,6S,9S ... system 3S,6S,9S,15S are available general delay locking time is 1S 3.Working voltage: 12VDC~24VDC ... theft:The lock can increase current to keep the latch locking state and sound beep automatically when meet abnormal ...