Securitron GL1-FLM Electromechanical Gate Lock, 12/24VDC, Monitored Fail Locked

The Securitron GL1-FLM is a fail-secure, monitored electromechanical gate lock with 2,000 pounds of holding force, automatic 12/24 VDC operation, and integrated latch status monitoring. Designed for indoor and outdoor swinging or sliding gates, it operates under up to 100 pounds of preload and features a self-aligning receiver with +/- 1/2-inch horizontal adjustment. Its tamper-resistant cast housing supports operation from -58 F to 167 F (-50 C to 75 C), while an optional mortise cylinder provides manual key override for compatible access control installations.

Securitron GL1-FLM 2000 lb Fail-Secure Monitored Electromechanical Gate Lock

The Securitron GL1-FLM is a heavy-duty, fail-secure electromechanical gate lock with integrated latch status monitoring and 2,000 pounds (907 kg) of holding force, designed for commercial, industrial, and institutional access control applications. Manufactured by Securitron, an ASSA ABLOY Group brand, the GL1-FLM provides electrically controlled locking for swinging and sliding vehicle gates, pedestrian security entrances, and livestock enclosure gates. Its fail-locked operating configuration maintains the secured condition when electrical power is removed, making it appropriate for installations requiring continued locking during power interruptions, subject to applicable emergency egress requirements. Unlike conventional electromagnetic locks that rely on continuous magnetic holding force, the GL1 uses an electromechanical locking mechanism and receiver assembly. The monitored FLM configuration provides latch status feedback to compatible access control equipment, enabling operators to monitor the locking condition as part of a supervised gate security system.

The GL1-FLM delivers 2,000 pounds of holding force and operates under gate preload conditions of up to 100 pounds (45 kg), allowing the locking mechanism to release when moderate pressure is applied against the gate. Its self-aligning receiver accommodates horizontal misalignment of up to +/- 1/2 inch (12.7 mm), helping maintain proper engagement as gates experience minor sagging, movement, or alignment changes over time. The lock incorporates a rugged, tamper-resistant cast housing designed to protect its internal electromechanical components in exposed security environments. The GL1-FLM also supports an optional standard mortise cylinder equipped with an Adams Rite MS cam for mechanical key override. This allows authorized personnel to operate the lock manually when an appropriate cylinder is installed. The mortise cylinder is not included and requires a compatible spacer based on cylinder length. Its integrated latch monitoring capability distinguishes the GL1-FLM from the standard GL1-FL model, allowing the access control system to receive feedback indicating the lock's monitored latch condition.

The Securitron GL1-FLM features automatic dual-voltage operation at 12 or 24 VDC, eliminating the need for manual voltage selection or field adjustment. At 12 VDC, the lock draws approximately 870 mA during the initial one-second activation period before reducing to 290 mA, with a specified operating consumption of 3.5 watts. At 24 VDC, initial current draw is approximately 720 mA before decreasing to 170 mA, with a specified operating consumption of 4.1 watts. These reduced operating current requirements help support integration with properly sized access control power supplies and backup power systems. The surface-mounted lock body measures approximately 2-3/4 inches long, 7-1/4 inches high, and 3-1/4 inches deep (70 x 184 x 83 mm), with an approximate shipping weight of 6 pounds (2.72 kg). Designed for demanding indoor and outdoor environments, the GL1-FLM operates at temperatures ranging from -58 F to 167 F (-50 C to 75 C). Its surface-mount configuration allows installation on compatible gate structures, while separately available mounting accessories accommodate different post arrangements and gate geometries.

The Securitron GL1-FLM is designed for integration with electronic access control systems, card readers, keypads, intercoms, remote release devices, and compatible gate automation equipment. For specialized installations, Securitron offers the FMK-SW Flex-Mount Bracket Kit for swinging gates and FMK-SL Flex-Mount Bracket Kit for sliding gates. These optional kits provide mounting brackets, hardware, and post shims for securing the GL1 to suitable fence and gate structures without custom-fabricated mounting assemblies. The GL1 Series is UL 294 listed for access control system applications and carries applicable CAN/ULC-S533 certification, with manufacturer documentation also identifying NFPA 101 compliance when incorporated into appropriate installations. Its fail-secure operation, monitored latch status, manual override capability, and compatibility with electronic access control components make it suitable for gated commercial properties, warehouses, industrial facilities, secured parking areas, and controlled pedestrian entrances. With 2,000-pound holding strength, preload tolerance, automatic dual-voltage operation, and weather-resistant construction, the GL1-FLM provides a durable gate locking solution for applications requiring both physical security and electronic lock-status monitoring.