DC12V Fail-Safe Electric Drop Bolt Lock | Time Delay

DC12V Fail-Safe Electric Drop Bolt Mortise Door Lock with Adjustable Time Delay

Upgrade your access control system with this heavy-duty DC12V Fail-Safe Electric Drop Bolt Lock (Model XM-200B). Engineered from high-strength aluminium alloy with a stainless steel bolt, this electronic mortise lock delivers dependable, long-lasting security for wooden doors, glass doors, office entryways, and security-grade installations. Made in Mainland China.

Key Features

• Fail-Safe (NC) Operation: Door locks when power is supplied; automatically unlocks when power is cut — ideal for emergency egress compliance.
• 500,000-Cycle Durability: Rated for over half a million locking operations for exceptional long-term reliability.
• Adjustable Time Delay: Easily set the unlock delay to 0s, 3s, or 6s to suit your specific access control workflow.
• Magnetic Induction Lock Mode: Smooth, quiet actuation with no external interference for stable, secure performance.
• Ultra-Low Power Design: Start current of 960mA, persistent current of just 130mA — energy-efficient and environmentally conscious.
• Low-Temperature Rated: Engineered to perform reliably even in cold-weather environments.
• Wide Compatibility: Fits a full range of door types — wooden, glass, office, and security doors.

Technical Specifications

Who Is This Lock For?

This electric bolt lock is the go-to choice for security integrators, facility managers, office administrators, and DIY smart-home enthusiasts who need a reliable, code-compliant fail-safe locking solution. It integrates seamlessly with card readers, keypads, intercoms, and other access control panels running on DC 12V.

For guidance on physical security standards and best practices for access control systems, refer to the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What does "Fail-Safe" mean for this electric drop bolt lock?

A: Fail-Safe (NC — Normally Closed) means the lock is engaged and secure when electrical power is present. If power is interrupted for any reason — such as a power outage — the bolt retracts and the door can be opened freely. This is the preferred configuration for emergency egress doors and fire-safety compliance.

Q: What types of doors is the XM-200B electric bolt lock compatible with?

A: The XM-200B is designed to work with a wide variety of door types, including wooden doors, frameless glass doors, aluminium-frame doors, office doors, and high-security entry doors. Its 200 × 34 × 40 mm profile makes installation straightforward on most standard door frames.

Q: How do I set the time delay on this electric mortise lock?

A: The time delay can be adjusted to 0 seconds, 3 seconds, or 6 seconds using the onboard selector switch. This controls how long after the unlock signal is received the bolt remains retracted before re-locking — useful for managing controlled entry flow in high-traffic areas.

Q: What power supply does this lock require?

A: The lock operates on DC 12V. A regulated 12V DC power supply capable of delivering at least 1A is recommended to handle the 960mA start current comfortably. It is compatible with standard access control power supplies used in commercial and residential installations.