12V 5A Access Control Power Supply with Battery Backup

12V 5A Universal Access Control Power Supply with Battery Backup Interface

Keep your door access control system running reliably around the clock with this robust 12V 5A universal power supply. Engineered for access control panels, electric locks, alarm systems, and security monitoring equipment, this unit features a built-in battery backup interface for seamless, uninterrupted power — even during a mains outage.

⚠ Please Note: Battery is not included. A 12V 7Ah battery is recommended (approximate size: 151mm × 65mm × 100mm).

Key Features

• Wide Input Range: AC 100–260V, 50–60 Hz — compatible with virtually any mains supply worldwide.
• Stable Adjustable Output: DC 11.5V–13.5V at 5A output current, adjustable to compensate for long wiring runs and ensure your electric lock operates correctly.
• Low Ripple: Upp ≤50mV for ultra-clean, stable DC output.
• High-Voltage Isolation: 1500V AC isolation for 1 minute without breakdown — safe and reliable design.
• Auto Short-Circuit & Overload Protection: Automatically disconnects on short circuit and restores once the fault is cleared. Also includes overheating and over-voltage protection.
• Battery Reverse Polarity Protection: If the battery is connected incorrectly, only the fuse blows — the power supply unit itself is protected from damage.
• Smart Battery Charging: 1A trickle charge with automatic cut-off at 13.5V (full charge). LED charge indicator included. Charges a 12V/7Ah battery in approximately 4 hours.
• Battery Over-Discharge Protection: Automatically disconnects battery when voltage drops below 9.5V to preserve data integrity in the access control unit and enable fast recharge.
• True Uninterruptible Switchover: Mains-to-battery switchover time of only 10ms — virtually seamless, zero-downtime power continuity.
• Battery Test Button: Built-in battery start button for easy installation testing and diagnostics.
• Remote Access Compatible: Integrated remote control output with door-open timing of 0–15 seconds (adjustable). Supports both NC and NO electric lock configurations — works with any standard electric lock.
• Multi-Controller Signal Input: CONTROL port accepts active signals (DC 5–24V) with internal isolation, allowing simultaneous connection of multiple access control controllers.
• Versatile Use: Ideal for access control, alarm systems, CCTV/monitoring equipment, and other 12V DC-powered security devices.

Technical Specifications

Installation & Safety Notes

• Install in a dry, well-ventilated location. Do not install in damp areas or where water ingress is possible.
• The two red wires are AC 100–260V input. Do not exceed the rated input range.
• The yellow-green wire must be properly earthed (grounded).
• High-voltage components are protected by a clear cover — do not open or touch internal components unless you are a qualified professional.
• Always identify positive (red) and negative (black) battery connections before installing the battery.

For general electrical safety guidance, refer to the U.S. Consumer Product Safety Commission – Electrical Safety Guide.

Frequently Asked Questions

Q: Is a battery included with this access control power supply?

A: No, the battery is not included. We recommend using a 12V 7Ah sealed lead-acid battery (approximate dimensions: 151mm × 65mm × 100mm) for optimal backup performance.

Q: What happens when mains power is cut — will my access control system stay on?

A: Yes. This unit features a true uninterruptible power supply (UPS) function with a switchover time of just 10ms from mains to battery — so fast that your access control system and electric locks remain fully operational without any interruption.

Q: Can I connect more than one access control controller to this power supply?

A: Yes. The CONTROL signal input supports active DC 5–24V signals and includes internal isolation, allowing you to connect multiple access control controllers simultaneously without interference.

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

A: This unit supports both Normally Closed (NC) and Normally Open (NO) electric lock configurations, making it compatible with virtually any standard electric lock used in access control installations.

Q: How do I adjust the output voltage?

A: The output voltage is adjustable between 11.5V and 13.5V via the built-in adjustment mechanism. This is particularly useful when wiring runs are long, as voltage drop along the cable can prevent electric locks from operating correctly — simply increase the output voltage to compensate.