The Seco-Larm SD-72281-6MQ is a momentary mortise cylinder key switch designed to provide a reliable backup when electronic access control devices fail. With a simple turn of the key, users can trigger a door unlock by toggling between normally closed (N.C.) and normally open (N.O.) contacts, ideal for added system redundancy and emergency override scenarios. 

• Keyed mortise cylinder with 2 included keys and removable core for rekeying

• Bright red (standby) and green (activated) LED indicators

• Stainless steel front cover and chrome aluminum backplate with vandal-resistant screws

• Rated DPDT, 25A@24VAC with color-coded wires for fast installation

• Momentary output design ideal for access control override functions