I'm fitting a steel personnel door to an outbuilding (https://www.lathamssteeldoors.co.uk/panelled-security-doors/security-cottage-style-steel-door/, in case anyone is interested), and I suspect that, being steel, a regular reed-switch door contact might not work as well as it would on a regular wood door.
Is there any sort of specific contact that I should consider using for this type of door, different to the normal recessed contact?
Is there any sort of specific contact that I should consider using for this type of door, different to the normal recessed contact?