DC12V Electric Drop Bolt Lock NC Fail Safe | Mortise Lock

DC12V Electric Drop Bolt Lock — NC Fail Safe Mode with Adjustable Time Delay

Take control of your access control system with this robust Electric Drop Bolt Lock. Designed for exposed surface-mount installation, this NC (Normally Closed) electronic mortise lock uses the precise on/off switching of electrical current to drive the extension and retraction of the stainless steel lock bolt — locking and unlocking your door reliably every single time. Made in Mainland China.

Why Choose This Electric Drop Bolt Lock?

• Versatile Compatibility: Suitable for wooden doors, fireproof doors, and metal doors — ideal for offices, warehouses, server rooms, and residential entryways.
• Fail Safe NC Design: In a power outage, the lock defaults to the open (unlocked) position, ensuring safe egress in emergencies.
• Adjustable Time Delay: Intelligent single-chip configuration allows you to fine-tune the unlock delay to match your specific access control workflow.
• Ultra-Low Power Consumption: Starting current of just 0.9A settling to 0.2A — energy-efficient for 24/7 operation.
• Ultra-Low Operating Temperature: Engineered for cooler surface temperatures during extended operation, extending the lifespan of the lock.
• Exceptional Durability: Rated for 500,000 cycles of powered locking — built to last in high-traffic environments.
• High-Strength Construction: Zinc alloy lock body with stainless steel bolt and a high-strength aluminum alloy panel featuring flash silver sandblast finish.
• Impressive Holding Force: Lock bolt withstands up to 800 kg of pressure — providing serious physical security.
• Magnetic Door Sensor: Integrated magnetic sensing detects door gaps up to 6mm, enabling smart door status monitoring.

Full Specifications

Package Contents

• 1× Electric Drop Bolt Lock Set

Important Notes

• Colors may vary slightly from product images due to screen calibration differences.
• Please allow ±1mm–10mm tolerance due to manual measurement.

Learn More About Access Control & Electrical Safety

For guidance on electrical safety standards relevant to electronic security hardware, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What does "NC Type" (Normally Closed) mean for this electric drop bolt lock?

A: NC (Normally Closed) means the lock bolt is extended and locked when power is applied. When power is cut — whether intentionally or during a power outage — the bolt retracts and the door can be opened. This is also called "Fail Safe" mode, as it prioritizes safe exit in emergency situations.

Q: What types of doors is this electric drop bolt lock compatible with?

A: This exposed-mount electric drop bolt lock is compatible with a wide range of door types, including wooden doors, fireproof doors, and metal doors. Its surface-mount design makes installation straightforward without requiring complex mortising of the door frame.

Q: What access control systems can I integrate this DC12V mortise lock with?

A: This lock operates on a standard DC 12V signal, making it compatible with most common access control systems including keypad controllers, card readers, RFID systems, and biometric access panels that provide a 12V output relay signal.

Q: What is the adjustable time delay feature?

A: The intelligent single-chip microcontroller built into this lock allows you to configure a custom time delay between receiving the unlock signal and when the bolt retracts. This is useful for tailoring door access timing to your specific security workflow — for example, allowing a brief delay before the door can be pushed open.