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I believe most mag locks should fail in a locked state, though. In other words, if there is a power cut then they stay locked.
It's an electromagnet though, no electricity no magnetisation. Good for safety too, imagine being inside a bike room and a fire breaks out in the building, the electricity is cut and you're locked in...
who22
jonnylamb
Most property developers sadly just put on the minimum possible lock they can for a bike store door. Generally this will be a single mag lock at the top. These can then be broken open with surprisingly little brute force. They really need at least a 2nd mag lock placed on a different part of the door frame. However, whether or not that gets done really depends on how good the managing agent for the development is. Sadly most new build developments with bike storage these days are hit by gangs within the first couple of months of completion, and the whole bike store is cleared out. I've had 2 full bikes and a rear wheel stolen this way over the years I lived in London.
I believe most mag locks should fail in a locked state, though. In other words, if there is a power cut then they stay locked.