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Latch bolt material: BrassWorking voltage: 9 to 15V DC/ACWorking current: 1.3A (only 1s is required)Extension length of dead bolt: 13mmLocking method: CollisionDouble cylinder and hand buttonDead bolt has anti-theft functionCan match easily with electric anti-theft doorLock can be open by key, switch or electric controllerLong service life, no static power consumption and high securityKnob operate from inside and outsidewith 5 brass key