Upgraded DC12V Electric Drop Bolt Mortise Lock, Fail Safe Mode with Adjustable Time Delay, Silver Short summary A reliable DC12V electric drop bolt mortise lock designed for door access control applications. Features fail safe operation and an adjustable time delay to match system timing and door behavior. Finished in silver with a compact mortise form factor for straightforward installation in compatible doors. Key benefits Controlled access: Electrically driven drop bolt provides secure locking and reliable unlocking under electronic control, integrating with card readers, keypads, controllers, and other access systems that use DC12V. Fail safe operation: Designed to unlock when power is removed, allowing the bolt to retract without power for situations where automatic unlocking on power loss is required. Adjustable timing: Built in time delay adjustment lets you fine tune how quickly the bolt engages or releases, so the lock matches door closing speed and access control sequencing. Compact mortise design: Fits into a mortise pocket for a neat installation and preserves door aesthetics while keeping mechanical components concealed. Durable finish: Silver metal finish blends with common hardware styles and resists wear from regular use. Key functions and compatibility Power requirement: DC12V operation, compatible with standard 12 volt access control power supplies and controllers. Lock type: Electric drop bolt mortise lock for doors designed to accept a mortise lock body. Mode: Fail safe mode so the bolt retracts when power is cut. Timing: Integrated adjustment to set time delay between electronic command and bolt action to match system requirements. Typical connections: Works with standard access control outputs, push to exit circuits, intercoms, and timed release controls. Material and performance Construction: Robust metal components for mechanical reliability and long service life. Silver finish for a professional appearance. Performance: Designed for repeated daily operation in commercial and residential access control settings. Adjustable timing reduces door wear by aligning lock action with door movement. Installation notes Intended for mortisestyle cutouts in doors. Verify door thickness and pocket size before installation. Requires a DC12V power source and compatible wiring to access control equipment. Time delay adjustment allows tuning after installation without major disassembly. Practical use scenarios Office entry with keypad or card reader: Integrate the lock with a reader so employees gain access electronically and the bolt retracts for entry. Time delay tuning prevents premature relock while passing through. Reception or front door with intercom release: Connect to an intercom or remote release system to allow remote unlocking from a reception desk. Fail safe mode ensures the bolt releases if power is lost during an emergency response. Internal secure room or equipment cabinet: Use in server rooms or supply closets that require controlled electronic access while maintaining a discreet mortise installation. What makes this product stand out Combines an electric drop bolt mechanism with mortise mounting for a concealed and secure installation. Adjustable time delay provides flexibility to match a range of door types and access control sequences. Fail safe mode addresses installations where unlocking on power loss is required. Specifications summary Voltage: DC12V Lock type: Electric drop bolt mortise lock Mode: Fail safe Finish: Silver Key features: Adjustable time delay, compact mortise design, compatible with standard DC12V access control systems If you need a dependable mortisestyle electric lock that integrates with existing DC12V access control systems and offers adjustable timing and fail safe behavior, this electric drop bolt lock is a practical option for commercial and residential applications.