DC 12V 3A/5A Access Control Power Supply | Backup Battery

DC 12V 3A/5A Access Control Power Supply with Backup Battery Interface

Keep your RFID card access control system running reliably with this professionally designed DC 12V Power Supply by Asia-Teco. Available in 3A and 5A output variants, this unit accepts a wide AC input range of 100–240V, making it compatible with power systems worldwide. The built-in backup battery interface (5A model) ensures your electronic locks and access control accessories stay operational even during a power outage.

⚠️ Please Note: The 3A model (KD1203-3A) does not include a backup battery interface. Only the 5A model (KD1205-5A) supports backup battery connection. Compatible backup battery: 12V 7Ah / DC 12.5–14V — provides approximately 3–5 hours of operation during a power outage (battery not included).

Made in Mainland China.

Why Choose This Access Control Power Supply?

• Wide Voltage Compatibility: AC 100–240V input works with virtually any standard wall outlet globally.
• Dual Output Options: Choose 3A or 5A to match your system's load requirements.
• Backup Battery Interface (5A model): Seamlessly connects a 12V 7Ah battery to maintain system operation during outages.
• Robust Fault Protection: Features gradual shutdown on output overload and immediate shutdown on output short-circuit — indicated by a flashing red LED with auto-recovery once the fault is cleared.
• Fail Secure Mode: Designed to default to a locked (secure) state in the event of power loss, protecting your premises at all times.
• Purpose-Built for Access Control: Specifically engineered for electronic locks, RFID card readers, and related access control accessories.
• LED Status Indicator: Visual monitoring of power and fault status at a glance.

Specifications

Ideal Applications

• RFID card readers and access control panels
• Electromagnetic and electric strike locks
• Door access control systems for offices, warehouses, and residential properties
• Security gate controllers and intercoms

For general electrical safety guidance when installing power supplies and access control systems, refer to the U.S. Consumer Product Safety Commission – Electrical Safety resource.

Frequently Asked Questions

Q: What is the difference between the 3A and 5A models of this access control power supply?

A: The primary difference is output current capacity and backup battery support. The 5A model (KD1205-5A) delivers up to 5 amps and includes a backup battery interface, allowing you to connect a 12V 7Ah battery for 3–5 hours of continued operation during a power outage. The 3A model (KD1203-3A) outputs up to 3 amps and does not include a backup battery interface. Choose based on your system's total current draw and whether battery backup is required.

Q: What type of backup battery is compatible with the 5A model?

A: This access control power supply is compatible with a standard 12V 7Ah sealed lead-acid (SLA) battery with a charging voltage of DC 12.5–14V. This battery type is widely available and provides approximately 3–5 hours of backup power during an outage. The battery is not included and must be purchased separately.

Q: What happens if there is a short circuit or overload on the output?

A: This power supply features built-in fault protection. In the event of an overload, it will gradually reduce and shut down output to protect connected devices. In the event of a short circuit, it will immediately shut down. In both cases, the flashing red LED signals the fault condition, and the unit will automatically recover and resume normal operation once the fault is cleared — no manual reset required.

Q: Is this power supply compatible with international voltages?

A: Yes. This unit accepts an AC input ranging from 100V to 240V, covering virtually all standard residential and commercial power systems worldwide, making it suitable for use in North America, Europe, Asia, and most other regions.