Hello!
I plan to equip our metal door on the stair landing with a small access control system. The door is going to be opened by a button inside, and by using either code panel or anti-vandal proximity card reader outside. Dilemma is in choosing the door lock. What is better, electromechanical or electromagnetic one? In power loss situation the electromagnetic lock will leave the door open, because the lock needs much electricity to hold door. Electromechanical lock is more reliable to my mind. If de-energized it does not open and can be unlocked by metal key. Do you have any thoughts about this? Please share your experience if you faced with such dilemma.
Thanks.