DC 12V Access Control Power Supply 5A – Electric Lock UPS

Power your entire door access control system with confidence using the Asia-Teco TA208CK DC 12V Switch Power Supply. Engineered for electric locks, RFID readers, fingerprint scanners, and multi-door access terminals, this 50W unit delivers stable, adjustable DC output with built-in battery backup capability — keeping your entry points secure even during a power outage.

Made in Mainland China.

⚠️ Note: Battery and remote control are not included. A 12V 7Ah battery (approx. 151 × 65 × 100 mm) is recommended for backup operation and can be purchased separately.

Key Features & Functions

• Wide-Range AC Input: Accepts AC 100–240V / 50–60 Hz, making it compatible with electrical systems worldwide.
• Adjustable DC Output: Output voltage is fine-tunable between DC 11.5V and 13.5V, compensating for long wire runs that may cause voltage drop to electric locks.
• High Output Capacity: 5A continuous output current (10A peak) and 50W power rating to support multiple locks and controllers simultaneously.
• Low Ripple Voltage: Upp ≤ 50 mV for exceptionally clean, stable power delivery to sensitive access control hardware.
• High-Voltage Isolation: 1,500V AC withstand for 1 minute — robust galvanic isolation between input and output for safety.
• Short-Circuit & Overload Protection: Automatically disconnects output on short circuit and self-recovers once the fault is cleared.
• Overheat & Over-Voltage Protection: Thermal and voltage sensing circuits protect the unit and connected devices under demanding conditions.
• Battery Backup (UPS Mode): Seamless 10 ms mains-to-battery switchover — a true uninterruptible power supply for access control systems.
• Smart Battery Charging: 1A trickle charge; auto-stops at 13.5V (full charge); LED charge indicator included. Fully charges a 12V 7Ah battery in approximately 4 hours.
• Battery Over-Discharge Protection: Automatically disconnects the battery when voltage drops below 9.5V to prevent data loss in the access controller.
• Battery Reverse-Polarity Protection: Only blows the fuse — the power supply itself remains undamaged if battery leads are accidentally reversed.
• Remote Door Release (0–15 s Adjustable Delay): Built-in relay output supports NC/NO wiring for compatibility with virtually any electric lock type. Delay range is 0–15 seconds.
• Multi-Controller Signal Input: Active signal input (DC 5–24V) with optical isolation allows simultaneous connection of multiple access controllers.
• Battery Test Button: Dedicated "B" button enables quick battery and installation testing without powering down the system.
• Versatile Application: Also suitable as a power source for alarm panels, CCTV cameras, and other 12V security equipment.

Specifications

Installation Safety Notes

• Install only in dry, well-ventilated locations — do not expose to moisture or rain.
• The two red wires are for AC 100–260V input; the yellow-green wire must be reliably grounded.
• High-voltage components are enclosed behind acrylic covers — do not open unless you are a qualified electrician.
• Always identify "red (+) and black (−)" battery leads before connecting the backup battery.
• Do not perform any live maintenance or touch internal components with conductive tools while energized.

For guidance on best practices in security system installation and electrical safety, refer to the U.S. Consumer Product Safety Commission (CPSC) Electrical Safety Guide.

Frequently Asked Questions

Q: Is a battery included with the Asia-Teco TA208CK access control power supply?

A: No, the battery and remote control are sold separately. The manufacturer recommends a 12V 7Ah sealed lead-acid battery (approximately 151 × 65 × 100 mm). The built-in 1A charger will fully charge a 7Ah battery in about 4 hours.

Q: Can this power supply run multiple electric locks and access controllers at the same time?

A: Yes. The TA208CK provides up to 5A continuous output (10A peak) at DC 12V — sufficient to power multiple electric locks alongside an RFID reader, fingerprint scanner, or other access control hardware. The active signal input supports simultaneous connection of more than one access controller.

Q: What happens to my access control system if the mains power is interrupted?

A: With a 12V backup battery connected, the unit switches to battery power in ≤ 10 ms — virtually instantaneous. Your electric locks and access controllers remain fully operational during the outage. The over-discharge protection circuit automatically disconnects the battery if its voltage drops below 9.5V to prevent data loss in connected controllers.

Q: Is the DC output voltage adjustable, and why would I need to adjust it?

A: Yes — the output is adjustable between 11.5V and 13.5V. Longer cable runs between the power supply and the electric lock can cause a voltage drop. Increasing the output voltage slightly compensates for this drop, ensuring your electric lock operates correctly even over extended wiring distances.

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

A: The relay output supports both Normally Open (NO) and Normally Closed (NC) wiring configurations, making it compatible with virtually any 12V electric lock — including magnetic locks (maglocks), electric strikes, and solenoid bolts. It also works with RFID card readers, fingerprint terminals, keypad controllers, alarm systems, and 12V CCTV cameras.