Single-Gang Mortise Cylinder Key Switch, Maintained: Keyed mortise cylinder (included with 2 keys), DPDT, Mortise cylinder removable for ease of keying, Flush mount, Chrome-plated aluminum back cover fits to single-gang box, Stainless-steel front cover snaps to back cover,

If a keypad or proximity card reader fails to activate an electronic lock, the user can switch between normally closed (N.C.) and normally open (N.O.) contacts using the Single-Gang Mortise Cylinder Key Switches (available with either momentary or maintained outputs), forcing the door to open. This acts as a backup for access control systems, so that the system does not rely on the integrity of a single device.

Features:

• Keyed mortise cylinder (2 keys included)
• Mortise cylinder removable for ease of keying
• Flush mount with vandal-resistant screws
• Chrome-plated aluminum back plate fits to single-gang box
• Stainless-steel front cover conceals mounting screws
• DPDT, 25A@24VAC contact rating
• Color-coded wires
• Maintained (SD-72031-6MQ) or momentary (SD-72081-6MQ) output