The ST-DB300 is a high-strength electric bolt lock designed for secure access control applications. With a solid holding force, it ensures strong and reliable locking for wooden, glass, metal, and PVC doors. This fail-safe model unlocks automatically when power is cut, making it ideal for emergency exit pathways. Engineered with a stainless steel locking cylinder and low-temperature operation, the lock also features an LED indicator to show lock status and an adjustable delay timer for auto-locking (0, 3, 6, or 9 seconds).