Rainproof Access Control Power Supply DC 12V 5A Time Delay Adapter

Asia-Teco Rainproof Access Control Power Supply Transformer — DC 12V–15V, 5A, 0–15s Time Delay

Keep your door access system running reliably with the Asia-Teco KDB18-E Access Control Power Supply Transformer. Designed for modern security installations, this 60W rainproof power adapter delivers stable DC 12V output at up to 5A — making it the ideal backbone for face recognition locks, fingerprint readers, card readers, electric strikes, magnetic locks, building intercoms, and video access control systems.

Made in Mainland China.

Why Choose This Access Control Power Supply?

• Versatile Compatibility: Works seamlessly with face recognition devices, fingerprint scanners, card access controllers, electric locks (both fail-safe and fail-secure), building intercoms, and video access control units.
• Adjustable Time Delay (0–15 seconds): Built-in time delay circuit lets you set the exact unlock duration to suit your security requirements — from instant release to a full 15-second hold.
• Rainproof Construction: Weather-resistant housing makes it suitable for outdoor or semi-outdoor installations where moisture exposure is a concern.
• Wide Input Voltage: Accepts AC 110V/220V input, compatible with both North American and international electrical standards.
• NO & NC Lock Support: Supports both Normally Open (NO/fail-secure) and Normally Closed (NC/fail-safe) electric lock configurations for maximum flexibility.
• Built-In Protection Circuit: Automatically disconnects voltage output in the event of a short circuit or overheating, then resumes normal operation after 3 minutes — protecting your connected devices from damage.
• Exit Button Input (PUSH): Dedicated PUSH/GND terminal allows you to connect an exit button for convenient manual lock/unlock control.
• CONTROL Signal Input: Accepts DC 5V or DC 12V electrical signal input to control the open/close state of the electric lock remotely.
• Stable 12V Output Rail (+12V/GND): Provides a clean DC 12V supply to power your access control devices directly from the unit.
• Reduces Lock Interference: Suppresses induced reverse current from the electric lock, minimizing interference with standalone controllers and enhancing overall system stability and safety.

Technical Specifications

Terminal Guide

• NO & GND: Fail-secure lock control — no output in standby; after trigger, NO is anode, outputs DC 12V for the set delay duration (0–15s).
• NC & GND: Fail-safe lock control — no output in standby; after trigger, NC is anode, outputs DC 12V for the set delay duration (0–15s).
• PUSH & GND: Exit button input terminal — controls lock/unlock via a physical switch. Do NOT connect an electrical signal to PUSH/GND.
• +12V & GND: Supplies DC 12V power directly to connected access control devices.
• CONTROL+ / CONTROL−: Accepts DC 5V or DC 12V signal input to control electric lock open/close state (anode to CONTROL+, cathode to CONTROL−).

⚠️ Important Notes

• Set the delay time to the minimum setting when initially connecting an electric lock.
• The PUSH/GND terminal is a switch-only input — never apply an electrical signal directly to this terminal.
• Read the product instruction carefully before installation and use.

Installation & Safety Resources

For guidance on safe electrical installation practices, visit the OSHA Electrical Safety page for best practices when working with power supplies and wiring. For general consumer product safety information, consult the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

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

A: The Asia-Teco KDB18-E is compatible with both Normally Open (NO/fail-secure) and Normally Closed (NC/fail-safe) electric locks. It is also suitable for use with face recognition devices, fingerprint scanners, RFID card readers, building intercoms, video access control systems, and electric strikes or magnetic locks.

Q: Can this power supply be used outdoors?

A: Yes. The KDB18-E features a rainproof housing, making it appropriate for outdoor or semi-outdoor installations where the unit may be exposed to moisture or light rain. Ensure it is properly mounted and shielded from direct heavy water exposure for best long-term performance.

Q: How does the built-in time delay work?

A: The adjustable time delay circuit (0–15 seconds) determines how long the electric lock remains in its triggered state after an access event. You can set this duration using the on-board adjustment. Note: always set the delay to the minimum when first connecting your electric lock, then increase as needed.

Q: What input voltages are supported?

A: This transformer accepts AC 110V or AC 220V input, making it compatible with both North American and international electrical systems. Simply ensure your wiring matches the correct input before installation.

Q: What happens if there is a short circuit or the unit overheats?

A: The KDB18-E has a built-in protection circuit that automatically disconnects the voltage output when a short circuit or overheating condition is detected. After approximately 3 minutes with the issue resolved, the unit will resume normal operation upon power-up, protecting your connected devices from damage.