Corbin Russwin ML20907-LL-626-SEC-M91, Fail Secure Electrified Mortise Lock, Outside Grip Locked when Not Energized, No Cylinder Override, Latchbolt Monitor, Less Cylinder, Lever x Lever Body Only, Field Reversible, Grade 1, US26D Satin Chrome Finish

The Corbin Russwin ML20907-LL-626-SEC-M91 is a Grade 1 Fail Secure Electrified Mortise Lock featuring an outside grip that remains locked when de-energized. This model excludes the cylinder override but includes a latchbolt monitor for enhanced security feedback. It is a lever x lever lock body supplied without a cylinder, is field reversible, and finished in US26D satin chrome.

ML20907 x SEC

• Latchbolt by grip either side only when lock is energized.
  
• Outside grip locked when lock is not energized.
  
• Inside grip always free.
  
• Auxiliary latch deadlocks latchbolt.
• Locked when power is off and unlocked when the power is on.

M91 - Latchbolt Monitor
Latchbolt monitoring is a SPDT switch which monitors the full extension of the main latch.