This small electromagnetic lock is easy to install and comes with the advantage that but may have an instruction about the cabinet is locked. It can be connected to the baths 12 and 24 volts (300 / 150mA). Remember the rubber under the anchor plate - otherwise it will be hard pressed to hold on to anything.
The size is: 90x38,5x24,5mm anchor plate is 33 * 75mm
See here an example of how easy it is to install