12V Fail Secure Electric Drop Bolt Lock | Access Control
12V Fail Secure Electric Drop Bolt Lock | Access Control
12V Fail Secure Electric Drop Bolt Lock — Electronic Access Control Deadbolt
Keep your doors secure with the LUCKING DOOR 12V Fail Secure Electric Drop Bolt Lock — a robust, CE & FCC certified electronic deadbolt designed for modern access control systems. Featuring an aluminum alloy body, a stainless steel locking tongue, adjustable time delay, and a manual override mechanical key, this drop bolt lock delivers dependable security for offices, server rooms, glass doors, wooden doors, and more.
Key Features
- Fail Secure (NO Lock): Door remains locked when power is off — ideal for high-security environments where locking on power loss is critical.
- Mechanical Key Override: Provides manual unlocking capability even during power outages or system failures.
- Adjustable Time Delay: Selectable delay of 0, 3, or 6 seconds (0–6 seconds adjustable) to suit your entry flow needs.
- LED Status Indicators: Green LED = unlocked; Red LED = locked — clear, at-a-glance status at all times.
- Door Status Signal Output: Built-in contact for integration with access control panels, alarms, or monitoring systems.
- Durable Construction: Aluminum alloy housing with a 12.5mm diameter stainless steel locking tongue (15mm ± 1mm pop-up length) for long-lasting reliability.
- Wide Operating Temperature: Performs consistently from -10°C to +55°C (-14°F to 131°F).
Specifications
| Model | B9L |
| Material | Aluminum Alloy |
| Working Voltage | DC 12V |
| Working Current | 80 mA |
| Starting Current | 1,300 mA (1.3A) |
| Lock Type | Fail Secure (Power Off = Locked) |
| Time Delay | 0 / 3 / 6 seconds (adjustable 0–6s) |
| Locking Tongue | 12.5mm diameter stainless steel, 15mm ± 1mm pop-up |
| LED Indicators | Green (Unlocked) / Red (Locked) |
| Wiring | Red = Positive (+), Black = Negative (−) |
| Operating Temperature | -10°C to +55°C |
| Certification | CE, FCC |
| Country of Origin | Made in Mainland China |
What's in the Box?
- 1 × Electric Drop Bolt Lock (Model B9L)
- Mechanical key(s) for manual override
- Mounting hardware
Ideal Applications
- Office and commercial door access control
- Server rooms and data centers
- Glass doors, wooden doors, and metal doors
- Security checkpoints and controlled entry zones
- Integration with keypad, card reader, or biometric access systems
For guidance on physical security standards and best practices for electronic access control, visit the NIST Cybersecurity & Physical Security Resources.
Frequently Asked Questions
Q: What does "fail secure" mean for this electric drop bolt lock?
A: A fail secure lock (also called a Normally Open or NO lock) means the door remains locked when electrical power is lost or interrupted. This is the preferred mode for high-security areas such as server rooms or restricted zones, where you want the door to default to a locked state during a power outage.
Q: Can I unlock this electric deadbolt manually if power goes out?
A: Yes. The LUCKING DOOR B9L drop bolt lock includes a mechanical key override, allowing authorized personnel to unlock the door manually even when there is no power — ensuring you are never locked out in an emergency.
Q: How do I adjust the time delay on this lock?
A: The time delay can be set to 0, 3, or 6 seconds (adjustable between 0–6 seconds). This controls how long the bolt remains retracted after an unlock signal is received, giving users enough time to open the door before it automatically re-locks.
Q: What access control systems is this lock compatible with?
A: This 12V DC electric drop bolt lock is compatible with most standard access control systems, including keypad controllers, RFID card readers, biometric scanners, and exit button systems. Its door status signal output contact allows seamless integration with alarm panels and monitoring equipment.
Q: What is the working voltage and current for this lock?
A: The lock operates on DC 12V with a working current of 80 mA and a starting current of 1,300 mA (1.3A). Ensure your power supply is rated to handle the starting (inrush) current for reliable operation.