Electromagnetic or electromechanical lock: which one you need
The terminal decides whom to let in, but the lock holds the door. Its type decides what happens to the door when the power fails.
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Types
Three types of lock
- ElectromagneticA magnet holds the door while there is power. No moving parts, so there is almost nothing to break. The usual choice for office doors.
- What happens to it in a power cutPower is lost and the door is open. That is why such a lock is usually connected through a UPS.
- ElectromechanicalIt locks the door with a bolt. It usually stays locked without power and opens with a key from outside (some models unlock when power is lost). Used on side gates, gates and street doors.
- Electric strikeIt is fitted in the door frame and works with an ordinary lock. Handy when you would rather not change the lock on the door.
- A door closer is a mustWhatever lock is fitted, the door must close by itself. Otherwise it stays open after the very first pass.
Questions
Frequently asked questions
Which lock is more reliable?
For a door inside a building an electromagnetic lock is usually enough. Outdoors and on a side gate an electromechanical one is more common.
How do you get out if the lock does not open?
An exit button is fitted for that. Many electromechanical locks also have a mechanical button or thumb-turn on the inside — this is checked when the lock is selected.
Who selects the lock?
We do: we look at the door, its weight and the place and select the lock. The visit and the estimate are free.
See also