Keyed Electric Drop Bolt Lock with Manual Key Override Fail-Secure Heavy Duty for Commercial Access Control Security System

Fail-Secure Security Mode: Remains locked when power is off, unlocks only with power supply. Provides higher security, prevents unauthorized opening, great for warehouses, storage rooms and confidential rooms. Solid Stainless Steel Bolt Structure - Solid lock bolt and thickened body, strong bearing capacity, stable locking for long-term frequent use. Built-in LED Status Indicator - Clear LED light shows lock/unlock status in real time. Easy to check working condition day and night. Dual Unlock Ways with Emergency Key. When the access control system loses power or malfunctions, you can unlock the door directly with the key, effectively solving emergency access problems and adding extra security backup. Wide Compatibility - Matches most access control systems, suitable for wooden door, glass door, metal door, fireproof door, etc