DC 12V Access Control Power Supply 5A – RFID & Lock Controller

DC 12V Door Access Control Power Supply Controller – 5A, AC 100–245V

The Asia-Teco KDB08-5A Access Control Power Supply Controller is a compact, heavy-duty unit engineered to deliver stable, reliable DC 12V/5A power to a wide range of entry management devices — including RFID card readers, fingerprint scanners, electromagnetic locks, exit push buttons, and intercom systems. Built with high-quality electronic components and advanced international engineering standards, this controller is your go-to solution for professional-grade door access installations. Made in Mainland China.

Why Choose This Access Control Power Supply?

• Universal Voltage Input: Accepts AC 100V–245V (50–60Hz), making it compatible with power grids worldwide — ideal for both domestic and international installations.
• Direct Electric Lock Control: Drives electromagnetic and electric strike locks directly, reducing the load on your access controller and simplifying wiring.
• NC/NO Output Selection: Supports both Normally Closed and Normally Open relay output configurations, giving you flexibility to control virtually any type of electric lock.
• Adjustable Locking Delay: Built-in delay control circuit allows lock timing to be set from 0 to 10 seconds (up to 15 seconds per circuit design), giving you precise control over entry timing.
• Automatic Short-Circuit Protection: Onboard protection circuitry automatically disconnects or triggers the fuse in unexpected short-circuit situations, safeguarding your entire access control system.
• Anti-Interference Design: Engineered to minimize electrical disturbance, ensuring consistent, stable output (±0.5% typical) even in noisy electrical environments.
• Lightweight & Compact: Weighing only 290g with a rugged metal enclosure, this unit is easy to install in standard access control enclosures or junction boxes.
• Wide Operating Temperature: Functions reliably from -20°C to 65°C (-4°F to 149°F), suitable for indoor and semi-outdoor environments.

Key Specifications

Compatible Devices

• RFID / IC Card Readers
• Fingerprint Access Controllers
• Electromagnetic (EM) Locks & Electric Strike Locks
• Exit Push Buttons
• Intercom Systems
• Access Control Panels

What's Included

• 1 × Access Control Power Supply Controller (KDB08-5A)

For guidance on best practices for electrical safety in access control installations, refer to the OSHA Electrical Safety Guidelines.

Frequently Asked Questions

Q: Is this access control power supply compatible with my country's electrical voltage?

A: Yes. The KDB08-5A accepts a wide AC input range of 100V to 245V at 50–60Hz, making it universally compatible with electrical systems across North America, Europe, Asia, and most other regions worldwide.

Q: Can I use this power supply with both electromagnetic locks and electric strike locks?

A: Absolutely. The NC/NO relay output is user-selectable, which means it works seamlessly with both Normally Closed electromagnetic (EM) locks and Normally Open electric strike locks, giving you full flexibility for your installation.

Q: How do I adjust the locking delay time on this controller?

A: The unit features a built-in adjustable delay control circuit that lets you set the lock engagement time anywhere from 0 to 10 seconds (hardware supports up to 15 seconds). This is typically adjusted via a trim potentiometer on the board — consult the included documentation or your access control system requirements for the ideal setting.

Q: What happens if there is a short circuit in my access control wiring?

A: The KDB08-5A includes automatic short-circuit protection. In the event of an unexpected short circuit, the power supply will either temporarily disconnect output or trip the onboard fuse, protecting both the power supply and connected devices from damage.