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Electric strikes come in many varieties. They can be 12 or 24 or even higher voltage and they may take AC or DC current and some even take both. ASC-F-S12 is a fail secure electric strike lock. The main feature of fail secure electric strike lock is that it stays locked even without power. The most common by far is a fail secure. When you need that buzzing sound you may have heard when being buzzed into an office that's the sound of AC current going through the electric strike. If you need this sound as a signal to push on the door when unlocking the strike then choose an AC electric strike and an AC power source or transformer. If you do not want or need this buzzing sound then choose a DC power source or transformer. The DC strike is almost completely silent when it releases except for a slight click sound. On average a DC electric strike will last longer than an AC electric strike.

Plate type lock is the other lock which operates only when it gets power supply. When power supply. It is 12/24V Electromagnetic lock with 700 LBS(270 kgs) holding force, fail safe. It has natural finish.

Drop-bolt locks are normally used as auxiliary locks similar to dead bolts. Both the drop-bolt lock body and the strike have interlocking leaves similar to a door hinge. When closed, locking pins in the lock body drop down into the holes provided in the strike and secure the locking system. Since the lock body and the strike are interconnected with locking pins when closed, the lock essentially becomes a single unit and is extremely difficult to separate.
Power Requirement: DC12V ± 10% - 1.2A
The following average voltage-current data are recorded by measuring for practical reference.
For proper voltage, please supply the tolerable voltage to prevent overheating and delayed door release time due to over voltage or unable to operate thru under voltage.