Electrically locking and unlocking both levers (outside cylinder, inside
thumbturn with deadbolt) - Both knobs/levers 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 outside or either knob/lever unless electrically locked. Note that locking both levers will prevent normal egress from the 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. Available with deadbolt monitor (DM) feature. - Caution: Double cylinder locks on esidences–or on any door in any structure which are used for egress–are a life safety hazard in times of emergency, and their use is not recommended. Installation should be in accordance with existing codes only.
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