Door Access Control Power Supply DC 12V 3.5A | NO NC Output

Asia-Teco Door Access Control Power Supply Switch – DC 12V, 3.5A, 24W

Take full command of your entry system with the Asia-Teco KDB03 Access Control Power Supply. Engineered for reliability, this compact metal-housed unit delivers a steady DC 12V / 3.5A output from any standard AC 100–240V wall supply — making it universally compatible across homes, offices, and commercial buildings worldwide.

With built-in NO/NC output switching and an adjustable 0–30 second time delay, this power supply works seamlessly with electric locks, access controllers, exit push buttons, and RFID/IC card readers. Its advanced anti-interference circuitry ensures stable, uninterrupted performance even in demanding environments.

Made in Mainland China.

Key Features

• Universal AC Input: Accepts AC 100–240V — compatible with power grids worldwide
• Regulated DC Output: Delivers 12V DC at 3.5A (24W) for driving electric locks directly
• Adjustable Time Delay: Configurable lock release delay of 0–30 seconds via on-board control
• NO & NC Outputs: Supports Normally Open and Normally Closed lock configurations
• Multiple Control Ports: Control, Push, GND, DC12V, NC, and NO terminals for flexible wiring
• Auto Short-Circuit Protection: Built-in fuse auto-protection guards against unexpected overloads
• Reduces Controller Load: Powers locks independently, simplifying wiring and protecting your access controller
• Compact Metal Housing: Durable all-metal enclosure (3.3 × 6.7 × 10.2 cm) for long-term installation
• Low Power Consumption: Efficient switching design minimises energy use

Specifications

Compatible Devices

• Electromagnetic (E/M) locks
• Electric strike locks
• Access controllers
• Exit push buttons
• RFID / IC card readers

Please note: The 3.5A model supports 1 electric lock. For 2 electric locks, a 5A model is recommended.

For more information on electrical safety standards relevant to access control hardware, visit the U.S. Consumer Product Safety Commission (CPSC). For wiring safety guidelines, refer to OSHA Electrical Safety Standards.

Frequently Asked Questions

Q: How many electric locks can the Asia-Teco KDB03 3.5A power supply control?

A: The 3.5A output is rated to power 1 electric lock reliably. If you need to control 2 electric locks simultaneously, you should opt for a 5A-rated access control power supply instead.

Q: What types of electric locks are compatible with this access control power supply?

A: This unit is compatible with a wide range of locking hardware, including electromagnetic (E/M) locks, electric strike locks, and magnetic locks. It supports both Normally Open (NO) and Normally Closed (NC) configurations, giving you the flexibility to match any door hardware setup.

Q: Can I use this power supply with my existing RFID card reader or exit button?

A: Yes. The KDB03 features dedicated Control, Push, GND, DC12V, NC, and NO terminals, making it straightforward to connect alongside RFID/IC card readers, access controllers, and exit push buttons in a single integrated system.

Q: Is the time delay fixed or can I adjust it?

A: The time delay is fully adjustable from 0 to 30 seconds, allowing you to customise how long the lock remains released after an access event — ideal for tailoring your system to different door traffic requirements.

Q: Is this power supply safe to install in a commercial environment?

A: The KDB03 is built with high-quality metal housing, anti-interference circuitry, and an automatic short-circuit protection mechanism that disconnects power or trips the auto-fuse in overload situations. Always ensure installation complies with local electrical codes and is performed by a qualified technician.