Fail Safe DC12V Electric Bolt Lock – Time Delay & Feedback
Fail Safe DC12V Electric Bolt Lock – Time Delay & Feedback
Asia-Teco Fail Safe DC12V Drop Electric Bolt Lock – Model B1L
Upgrade your door security with the Asia-Teco B1L Fail Safe Electric Bolt Lock — a reliable DC12V electronic mortise lock engineered for wooden and metal doors. Built from heavy-duty aluminium alloy, this 5-wire drop bolt lock features magnetic induction locking, an adjustable time delay, and a feedback signal output for seamless integration into access control systems.
Why Choose This Electric Bolt Lock?
- Fail Safe (NC) Operation: The door locks when power is on and automatically unlocks when power is cut — ideal for emergency egress compliance and life-safety applications.
- Adjustable Time Delay: Choose from 0, 3, or 6 seconds of unlock delay to suit your specific access control workflow.
- Feedback Signal Output: The 5-wire design provides a real-time door status feedback signal, making integration with alarm panels and access controllers straightforward.
- Magnetic Induction Locking: Smooth, reliable bolt engagement every time — no mechanical wear from traditional key cylinders.
- Stable & Interference-Free Circuit Design: Specially designed internal circuitry minimises external electrical interference for consistent, dependable performance.
- Heavy-Duty Aluminium Alloy Construction: Engineered for long service life in both residential and commercial environments.
- Versatile Compatibility: Suitable for wooden doors, metal doors, glass doors with metal frames, and more.
Technical Specifications
| Brand | Asia-Teco |
| Model | B1L |
| Working Voltage | DC 12V |
| Working Current | Start-up: 1.2A | Operating: 0.25A |
| Lock Mode | Magnetic Induction |
| Secure Mode | Fail Safe (NC Model) — Locked on power, unlocked on power-off |
| Time Delay | 0 / 3 / 6 seconds (adjustable) |
| Wires | 5-wire (with feedback signal) |
| Material | Aluminium Alloy |
| Dimensions | 160 × 39 × 24 mm |
| Compatible Doors | Wooden, Metal |
| Country of Origin | Made in China |
Ideal Applications
This electric bolt lock is perfectly suited for offices, server rooms, warehouses, apartment buildings, and any commercial or residential access point where reliable electronic access control is required. Its fail safe design ensures occupant safety during power outages or emergencies.
For guidance on safe electrical installation practices, refer to the OSHA Electrical Safety Standards.
Frequently Asked Questions
Q: What is a fail safe electric bolt lock and how does it work?
A: A fail safe electric bolt lock (also known as an NC or Normally Closed model) keeps the bolt engaged and the door locked while power is supplied. When power is cut — either intentionally via access control or in an emergency power outage — the bolt retracts and the door unlocks automatically, allowing free egress. This is the required mode for most fire-rated and life-safety door applications.
Q: What does the feedback signal wire do on this 5-wire lock?
A: The feedback signal wire sends a real-time status signal back to your access control panel or alarm system, indicating whether the door bolt is currently in the locked or unlocked position. This allows your system to monitor door status, trigger alerts for forced entry, and log access events accurately.
Q: Is this electric bolt lock compatible with wooden doors?
A: Yes. The Asia-Teco B1L is specifically designed to work with both wooden and metal doors. Its compact aluminium alloy housing (160 × 39 × 24 mm) makes it easy to install as a surface-mounted mortise lock on a wide variety of door types and frame materials.
Q: Can I adjust the unlock time delay on this lock?
A: Absolutely. The B1L offers three selectable time delay settings — 0 seconds (instant unlock), 3 seconds, or 6 seconds — so you can fine-tune the door release timing to match your access control workflow or security requirements.