SDC LR100HK QuietDuo Electric Latch Retraction Kit | For Hager 4501 Series Devices

The SDC LR100HK is a high-performance Electric Latch Retraction (ELR) kit specifically engineered to motorize existing Hager mechanical exit devices. This field-installable retrofit solution is a premier solution for commercial door security, allowing facility managers to integrate electronic access control without the expense of replacing architectural-grade panic hardware. By converting your manual bar into a motorized system, the LR100HK serves as an efficient solution for door restoration in high-traffic schools, hospitals, and government buildings.

Motorized Access Control for Hager Hardware

The SDC LR100HK utilizes a quiet, high-torque motor to provide a modern alternative to traditional, noisy solenoid-driven kits. It acts as a proactive solution for door surface repair by reducing mechanical impact and wear on the latching mechanism:

• Hager Device Compatibility: Specifically designed for the Hager 4501 Rim and 4501-SVR Surface Vertical Rod series.
  
• Simultaneous Latch & Pushpad Retraction: The LR100HK pulls the pushpad into the dogged (depressed) position while retracting the latch. This results in much quieter "push-pull" operation, making it an ideal solution for door restoration in noise-sensitive corridors and professional office environments.
  
• Sustained Electric Dogging: Perfect for high-traffic daytime business hours, the motor can hold the door in a retracted state via an access control schedule, while always maintaining code-compliant uninhibited egress for life safety.
  
• Intelligent Re-Trigger Technology: The onboard logic includes an automatic re-trigger function; if the device fails to retract on the first attempt, the motor automatically pulses again to ensure the door is unlocked and accessible.
  

Energy-Efficient Performance and Installation Benefits

Upgrading your facility to electronic locks with the SDC LR100HK provides a streamlined solution for commercial door security with optimized power requirements:

• Low Current Infrastructure: Features a remarkably low 700 mA inrush and a quiet 200 mA continuous hold at 24VDC. This efficiency eliminates the need for expensive, high-inrush power supplies—a standard 1 Amp power supply can successfully handle up to two exit devices.
  
• Cost-Effective Retrofitting: Retain your high-quality Hager hardware and its structural thru bolts, significantly lowering material costs compared to purchasing entirely new electronic panic bars.
• Fire-Rated Compliance: This kit is UL Classified for use on 3-hour fire-rated and non-fire-rated exit devices, ensuring your building remains safe and up to code.
  
• Simplified Wiring: The low current requirement allows for longer wire runs with smaller gauge wire, providing more flexibility for installers during a solution for door restoration project.
  

Technical Details & Specifications

• Brand: SDC (Security Door Controls)
• Model: LR100HK (Motorized ELR Kit)
• Compatibility: Hager 4501 Rim and 4501-SVR
  
• Voltage: 24VDC
  
• Current: 700mA Inrush / 200mA Hold
• Certifications: UL Classified for 3-Hour Fire Rated Doors
  
• Operation: Field-installed; simultaneous latch and pushpad depression.