12V Electric Drop Bolt Lock – Fail Safe/Secure & Time Delay
12V Electric Drop Bolt Lock – Fail Safe/Secure & Time Delay
Asia-Teco Aluminum Electric Drop Bolt Lock with Signal Feedback
Upgrade your access control system with the Asia-Teco Electric Drop Bolt Lock — a heavy-duty, aluminium alloy mortise lock engineered for glass, wooden, metal, and security doors. Available in both Fail Safe (NC) and Fail Secure (NO) configurations, this versatile lock gives you full control over how your door behaves during power events.
Key Features
- Dual Mode Options: Choose Fail Safe (NC) — locks when powered, unlocks on power loss — or Fail Secure (NO) — unlocks when powered, locks on power loss — to suit your security requirements.
- Adjustable Time Delay: 0, 3, or 6-second configurable delay for smooth, controlled access transitions.
- Signal Feedback: Built-in feedback signal output lets your access control panel monitor lock status in real time.
- Aluminium Alloy Construction: Durable, corrosion-resistant body built for long-term, continuous operation.
- Magnetic Induction Lock Mode: Reliable, consistent engagement with minimal mechanical wear.
- Minimal External Interference: Engineered for stable, interference-free performance in demanding environments.
- Universal Compatibility: Fits most standard door types — glass, wood, metal, and security doors.
- Slim Profile: Compact 200 × 38 × 28 mm body installs discreetly into door frames.
Technical Specifications
| Brand | Asia-Teco |
| Model | B7L-NC / B7L-NO |
| Material | Aluminium Alloy |
| Working Voltage | DC 12V |
| Working Current | Start State: 1.1A; Working State: 0.14A |
| Wiring | 5 or 6 wires |
| Lock Mode | Magnetic Induction, Continuous Work Type |
| Secure Mode | Fail Safe (NC) / Fail Secure (NO) — optional |
| Time Delay | 0, 3, or 6 seconds (adjustable) |
| Signal Feedback | Yes |
| Dimensions | 200 × 38 × 28 mm |
| High-Concern Chemicals | None |
| Country of Origin | Made in China |
Who Is This For?
This electric drop bolt lock is ideal for office buildings, retail stores, server rooms, residential entry doors, and any application requiring reliable, electronically controlled access. Whether you're integrating with a keycard reader, keypad, or smart access controller, the B7L series delivers dependable performance.
For general electrical and access-control installation safety guidelines, refer to the OSHA Electrical Safety resource.
Frequently Asked Questions
Q: What is the difference between the Fail Safe (NC) and Fail Secure (NO) modes?
A: In Fail Safe (NC) mode, the lock engages (locks) when power is supplied and automatically releases (unlocks) when power is cut — ideal for emergency egress compliance. In Fail Secure (NO) mode, the lock releases (unlocks) when powered and engages (locks) when power is removed — best suited for high-security areas where the door must remain locked during a power outage.
Q: What door types is this electric drop bolt lock compatible with?
A: The Asia-Teco B7L drop bolt lock is compatible with most standard door types, including glass doors, wooden doors, metal doors, and reinforced security doors, making it highly versatile for residential, commercial, and industrial applications.
Q: How does the time delay function work on the B7L electric mortise lock?
A: The lock features a user-selectable time delay of 0, 3, or 6 seconds. This delay controls how long after receiving the unlock signal the bolt retracts, giving occupants time to react and pass through the door before the bolt re-engages — a useful feature in high-traffic access points.
Q: What does the signal feedback feature do?
A: The built-in signal feedback output allows your connected access control panel, alarm system, or building management system to monitor the real-time status of the lock (locked or unlocked), enabling better automation, logging, and security oversight.
Q: What power supply is required for this electric drop bolt lock?
A: The lock operates on DC 12V. The starting current is 1.1A and the working (holding) current drops to 0.14A, making it energy-efficient for continuous operation. A standard 12V access control power supply is recommended.