LCN 4311HSA-STD 24V LH 689 Sentronic Holder/Closer AL

LCN 4311HSA-STD 24V LH 689 Sentronic Holder/Closer AL is an advanced solution designed for high-traffic doors, combining convenience and functionality. This electrically controlled closer/holder allows for seamless passage as it utilizes a built-in scanner to detect when pedestrians are approaching. When the door is opened to 80 degrees or more, it automatically holds the door open, reducing wear on the hardware. With a robust construction featuring a high-strength cast iron cylinder and a forged steel main arm, the 4311HSA ensures durability and reliability. It operates on 24V AC/DC or 120V AC input, offering flexibility in installation. The adjustable hydraulic backcheck cushions the opening swing prior to 90 degrees, while separate regulation for closing and latching speeds provides precise control. Designed to conform to NFPA 101 and ANSI 156.15 standards, this surface closer is suitable for commercial use and can be easily operated, even in emergencies. Available in a variety of powder-coated finishes, including matte silver, it can complement any door and frame aesthetic. The unit's cold-weather fluid enhances its performance in various climates, ensuring year-round functionality. With a limited two-year warranty, the LCN 4311HSA is a reliable choice for enhancing safety and accessibility in any building.

Sentronic Holder/Closer AL

Standard Arm Track Door Closer, Left Hand, Aluminum

The 4310HSA Sentronic is an electrically controlled closer/holder designed to provide easy passage for groups of pedestrians through high traffic doors. Pedestrians moving through the doorway trigger the built in scanner. When the door is opened to 80 Deg. or more, the door is electrically held open to minimize wear on the door hardware. After the last pedestrian in a group passes through the doorway, the system timer releases the hold open, closing the door. The single lever trach arm closer is designed for pull side mounting.

Designed to provide easy passage for groups of pedestrians through high traffic doors.

Pedestrians, moving through the doorway, trigger the built-in scanner. When the door is opened to 80° or more, the door is electrically held open to minimize wear and tear on applied door hardware.

• Conforms to NFPA 101 and ANSI 156.15
• 24V AC/DC or 120V AC input
• When current is interrupted, hold-open releases and door closes
• Adjustable hydraulic backcheck cushions opening swing prior to 90°
• Separate regulation of general closing speed and latching speed
• Available in wide range of powder coated finishes to blend with door and frame (SEM magnets available in aluminum and dark bronze only)
• Circuit automatically handles AC or DC input
• Can be pushed safely and easily out of hold-open
• Functions as full rack and pinion door closer when hold-open is not engaged or current is interrupted
• High strength cast iron cylinder
• Forged steel main arm and piston
• All weather fluid

Resources

• 4310HSA Series Fire/Life Safety Closers/Holders Cut Sheet
• LCN 4311 HSA Installation Instructions
• LCN Electrified Door Control Product Guide
• LCN Low Energy Automatic Operators Brochure
• Von Duprin Finishes Chart