Corbin Russwin ML20914-LL-626-SEC-M91 Fail Secure Electrified Mortise Lock, Both Grip Locked when Not Energized, Outside Cylinder Override, Latchbolt Monitor, Less Cylinder, Lever x Lever Body Only, Field Reversible, Grade 1, US26D Satin Chrome Finish

The Corbin Russwin ML20914-LL-626-SEC-M91 is a Grade 1, US26D satin chrome finish electrified mortise lock designed for fail-secure operation. It features both grips locked when de-energized, an outside cylinder override, and a latchbolt monitor. This lever x lever lock body is field reversible and sold without a cylinder.

ML20914 x SEC

• Latchbolt by grip either side only when lock is energized.
  
• Both grips locked when lock is not energized.
  
• Latchbolt by key outside when lock is not energized.
  
• 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.