Schlage L283-475 Eu Fail Secure Electric Lock Case

Product Description

The SCHLAGE L283-475 EU is a fail-secure electrically unlocked lock case designed for use with mortise lock bodies in access-controlled door applications. In a fail-secure configuration, the lock remains locked when electrical power is removed, maintaining security during outages. This lock case integrates a request-to-exit (REX) function along with latchbolt and deadbolt monitoring, allowing the access control system to confirm the state of both bolts in real time. It is field reversible, making it adaptable to left- or right-hand door configurations without special factory orders. Installation is typically performed by licensed locksmiths or access control technicians.

This lock case is intended for use with SCHLAGE L9492 and L9494 series mortise locksets in commercial or institutional door hardware applications. It suits interior and exterior doors where access control integration, egress monitoring, and security continuity during power loss are required. The field-reversible design reduces job-site complexity when handing must be confirmed or changed at the time of installation.

Key Features

• Fail-secure operation: lock remains locked when power is removed
• Electrically unlocked: power applied releases the latch for access
• Request-to-exit (REX) latchbolt monitor signals egress activity to the access control panel
• Deadbolt monitor provides real-time bolt-position feedback to the access control system
• Field reversible for left-hand or right-hand door installation without factory modification
• Compatible with SCHLAGE L9492 and L9494 mortise lock bodies

Compatibility

Designed for use with SCHLAGE L9492 and L9494 series mortise locksets as stated by the manufacturer.

Installation Notes

Installation should be performed by a qualified locksmith or licensed access control technician familiar with commercial mortise hardware. Disconnect all power to the access control system before wiring or servicing the electric lock case. Verify door handing prior to installation and use the field-reversible feature to set the correct hand before mounting. Wiring must comply with applicable local electrical codes and the access control panel manufacturer's specifications.