DC 12V 3.5A Access Control Power Supply for Electric Locks
DC 12V 3.5A Access Control Power Supply for Electric Locks
DC 12V 3.5A Access Control Power Supply Adapter — Universal AC 100–240V Input
Keep your doors secure and your access control system running smoothly with this dependable DC 12V 3.5A power supply. Built with high-quality electronic components and advanced circuit engineering, this adapter delivers stable, regulated power to electric locks, magnetic locks, RFID/IC card readers, exit push buttons, and access controllers — all from a single compact unit.
Whether you're upgrading a commercial entry system or setting up a new door access installation, this power supply is engineered for consistent, interference-free performance across a wide range of operating environments.
Made in Mainland China.
Key Features
- Wide Voltage Input: Accepts AC 100V–240V, 50–60 Hz — fully compatible with global electrical standards.
- Stable DC Output: Regulated DC 12V / 3.5A output for reliable, low-noise power delivery.
- Direct Lock Control: Drives electric and magnetic locks directly, reducing load on your access controller and simplifying wiring.
- NC / NO Output Selection: Configurable Normally Closed (NC) or Normally Open (NO) outputs to suit virtually any electric lock type.
- Adjustable Time Delay: Built-in delay control circuit with 3 / 6 / 9-second settings (0–15 seconds adjustable) for flexible lock-release timing.
- Automatic Short-Circuit Protection: Built-in protection circuit temporarily disconnects power or trips the auto-fuse in the event of an unexpected short circuit, safeguarding connected devices.
- Wide Operating Temperature: Performs reliably from –20°C to +50°C, suitable for both indoor and outdoor-adjacent installations.
- Compact Form Factor: Measures just 10.2 × 6.7 × 3.3 cm — easy to mount or conceal within a door frame or control cabinet.
- Available in White or Black to blend with your installation environment.
Technical Specifications
| Brand | Asia-Teco |
| Model | KDB05 |
| AC Input | AC 100–240V, 50–60 Hz |
| DC Output | DC 12V / 3.5A |
| Time Delay Settings | 3 / 6 / 9 seconds (0–15 sec adjustable) |
| Output Mode | NC / NO selectable |
| Operating Temperature | –20°C to +50°C |
| Dimensions | 10.2 × 6.7 × 3.3 cm |
| Colors Available | White / Black |
| Country of Origin | Mainland China |
| Compatible Devices | Electromagnetic locks, electric strike locks, access controllers, RFID/IC readers, exit push buttons |
What's Compatible?
This power supply is designed to work seamlessly with:
- Electromagnetic (magnetic) door locks
- Electric strike locks
- Door access controllers
- RFID and IC card readers
- Fingerprint access machines
- Exit request / push-button devices
Safety & Standards
For guidance on electrical safety standards for power supplies and access control installations, refer to the U.S. Consumer Product Safety Commission (CPSC) and OSHA Electrical Safety guidelines to ensure your installation meets applicable safety requirements.
Frequently Asked Questions
Q: Is this access control power supply compatible with both 110V and 220V electrical systems?
A: Yes. The unit accepts a wide-range AC input of 100V–240V at 50–60 Hz, making it fully compatible with electrical systems in the United States, Europe, Asia, and most other regions worldwide without any need for a separate voltage converter.
Q: Can I use this power supply to directly control an electromagnetic (magnetic) lock?
A: Absolutely. The power supply is specifically designed to drive electromagnetic and electric strike locks directly. It reduces the load on your access controller and supports both NC (Normally Closed) and NO (Normally Open) wiring configurations, giving you flexibility for almost any lock type.
Q: How does the time delay function work?
A: The built-in delay control circuit allows you to set how long the lock stays released after an access event. Preset options are 3, 6, or 9 seconds, with an adjustable range of 0–15 seconds, so you can fine-tune door-hold-open time to suit your security requirements.
Q: What happens if there is a short circuit in the system?
A: The unit features automatic short-circuit protection. If a short circuit is detected, the power supply will temporarily disconnect or the built-in auto-fuse will trip, protecting your connected access control devices from damage.
Q: What are the dimensions of this power supply unit?
A: The unit measures 10.2 × 6.7 × 3.3 cm, making it compact enough to mount inside a door frame cavity, a wall-mount box, or a control panel cabinet.