LM21AFCB – Advanced Fire Control Release Device

The LM21AFCB integrates with commercial door operators to provide a UL864 Revision 9 compliant, economical fire door release system with enhanced safety and backup features.

Key Specifications

Compliance: UL864 Revision 9
Delay Settings: DIP switch selectable 10, 20, 30, or 60 second release delay
Battery Backup: Internal backup system for power outage operation
Obstruction Cycling: Works with safety edge to reverse on obstruction
Motor Voltage Sensing: Monitors operator voltage status
Test Keyswitch: Enables floor-level testing without alarm activation
Voice Evacuation (Optional): LM21AFCBVB model includes pre-recorded evacuation voice board

Features

UL864 Revision 9 compliant
Programmable DIP switch delay setting – either 10, 20, 30, or 60 seconds delay of door release to permit passage clearance
Internal Battery Backup system
Obstruction cycling – works in conjunction with the door’s electrical safety edge, reversing the door if an obstruction is encountered
Motor voltage sensing
Test keyswitch – permits floor-level testing of the system
Model LM21AFCBVB is equipped with a voice board to broadcast a pre-recorded evacuation message