The XL-120B Drop Bolt Lock with Key is a high-security fail-secure electronic lock built to secure doors in commercial, residential, and institutional settings. Designed for 90° to 180° hollow metal or wooden doors, it features a reinforced stainless steel bolt capable of withstanding over 1000 kg of shear force.

The lock includes a built-in mechanical key override, allowing emergency unlocking in case of power loss, making it an excellent solution for emergency exits and fire-rated doors. It supports adjustable delay settings (0–9 seconds) and incorporates a microcontroller system to reduce power consumption and heat buildup.

With over 500,000 mechanical cycles of tested reliability, and compatibility with most access control systems, the XL-120B is a reliable and durable solution for modern door security needs.