NBN EN 12209 : 2016

Defines requirements and test methods for durability, strength, security and functionality of mechanically operated locks and their locking plates: a) for use in doors in buildings; b) for use on fire and smoke compartmentation doors fitted with door closing devices, to enable such doors to close reliably and thus achieve self-closing in the event of fire; and c) for use on locked fire doors to maintain the fire integrity of the door assembly.