Solenoids are basically electromagnets made of a big coil of copper wire with an armature (a slug of metal) in the middle. This DC 12V Solenoid lock is used for locking sell-machine, storage shelf, file cabinet and etc. This solenoid lock features steady, durable, energy-saving, and had a long lifespan with an anti-theft and shockproof design. 12v solenoid lock consists of a slug with a slanted cut and a good mounting bracket. Under normal conditions, it does not use any power. So lock is active and can’t open the door because the solenoid slug is in the way. When a 9-12v dc is applied to the solenoid lock, the slug pulls in. As a result doesn’t stick out. Thus the doors can be opened.
The slug is pulled into the center of the coil when energized. Hence the solenoid able to pull from one end. The slanted slug in the solenoid can be opened using head screws by rotating it 90, 180, or 270 degrees so that it matches the door you want to use it with. It is very important to check polarity while connecting the solenoid lock. The red wire should be connected to the positive and the Black wire to the negative. A power transistor and a diode are used in order to drive the solenoid lock.
The solenoid lock is basically a latch for electrical locking and unlocking. This power-on type enables unlocking only while the solenoid is powered on. Thus a door with this type is locked and not opened in case of power failure or wire disconnection, ensuring excellent safety.