Electrically locking and unlocking outside lever (outside cylinder, inside thumbturn with deadbolt) - Outside knob/lever continuously locked (EL) or unlocked (EU) by 12 or 24V DC. EL is fail safe (power failure allows outside knob/lever to retract latchbolt). EU is fail secure (power failure locks outside knob/lever). Latchbolt is retracted by key from outside unless outside is electrically locked, or by knob/lever inside. Turning inside knob/lever simultaneously retracts both deadbolt and latchbolt. Deadbolt is thrown or retracted by key outside or by thumbturn inside. When unlocked, rotating outside lever retracts deadbolt and opens door. Auxiliary latch deadlocks latchbolt when door is closed. Inside knob/lever is always free for immediate egress. Available with deadbolt monitor (DM) feature.
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