ZKTeco · LG-20L
The ZKTeco LG-20R electromagnetic glass door lock is designed for integration into access control systems that require discreet installation without compromising the aesthetics of glass structures. Designed for reliable operation in professional access control systems, the lock is suitable for facilities with high security requirements. Operating principle and safety mode The lock operates using a fail-safe design : when power is applied, the door locks and automatically unlocks when the power is cut off. This mode ensures safe evacuation and meets emergency access requirements. Adjustable locking delay The ZKTeco LG-20R supports door closing delays of 0 , 3 , or 6 seconds . The adjustable delay allows you to adapt the lock to different access scenarios and user flow rates. Indication and feedback from the door Red and green LED indicators display the current lock status for visual monitoring . Magnetic feedback from the door improves position control accuracy and system reliability. Materials and design features The lock body is made of aluminum alloy , providing high mechanical str