12VDC Two Wire Electric Drop Bolt Lock

GM-EBL20 Electric Bolt Lock Why we need this product? Electric Bolt Lock is used to open or close the door. It will accept signal from power supply or access controller. Normally, it will closer(or door will open) when its power supply is off(we call it NO). But, we can also make it NC, which means: it will closer(or door will open) when its power supply is on We can make its life time to be 100000 times, if users need higher quality, we can also make 300000 times. For this