ACSI M1500MLR L9070B Motorized Latch Retraction for Schlage L9070 Mortise Lock, 24VACSI Series 1500 Electric Mortise Locks provide safety and security for stairtower doors or controlled areas where both locking and latching are required. The locks are available in motor-controlled or solenoid-controlled to allow remote electric locking or unlocking while conforming to life-safety codes.FeaturesUL ListedCalifornia State Fire Marshall approvedFail Safe (Power Lock)Outside trim is locked when power is applied and unlocked when power is removed (storeroom function when energized). Lockset will unlock in the event of a power failure (passage function).Fail Secure (Power Unlock)Outside trim is unlocked when power is applied and locked when power is removed. Lockset will lock in the event of a power failure.Simple user selectable fail safe/fail secure operation in motor-controlled locksContinuous duty ratedLow power consumption24VDC, 24VAC, 12VDC, or 12VAC operationWhen key cylinders are provided in the locks, the latch bolt may be momentarily retracted with key even though electrically locked. Note: Locks that are electrically unlocked may not be locked via the key cylinder.Wide variety of monitoring options are availableInterface with life-safety system