When you're shopping for industrial power supplies transformers for a door access control system, the power supply is the last thing you want to get wrong. A lock that buzzes, a strike that fails to release, or a controller that resets at the wrong moment often traces back to an undersized or misconfigured power feed. You need a 12V DC source that can deliver steady current to your electric locks or electromagnetic locks, and you need to know the wiring scheme will play nicely with your controller. That's the decision this guide tackles.
Quick Verdict
At $12.55, this door access control power supply (model Ta-k80 3a) delivers 12V DC output and an adjustable 0-15s release delay, all in a grey, spray-painted metal housing. It's a no-nonsense component for a basic access control install, giving you the two things you often need: a stable DC feed and a way to fine-tune how long the lock stays open.
Who It Suits
This supply is aimed at setups where an electric strike or electromagnetic lock needs a dedicated power feed. The AC 110-240V input means it can handle common mains voltages without a separate converter, and the NO/NC wiring mode lets you connect it to many controllers that use dry contact outputs. It requires installation, so it's best for someone comfortable with basic low-voltage wiring.
What Stands Out from the Listed Details
The adjustable delay is the feature that stands out. You can set the lock release time from 0 to 15 seconds, which is handy for matching door behavior to your traffic flow. The pluggable green terminal block also simplifies wiring: you can pre-terminate your cables and plug them in, rather than soldering or wrestling with screw terminals.
3A 12V Power Supply Control for Door Access Control
This is the unit you're evaluating. It's built with a metal, copper, and aluminium construction, finished with spray paint in grey. It outputs 12V DC at up to 3A. The package includes the access control power supply controller and a Chinese & English manual. A concrete reason to choose it: the NO/NC wiring support gives you flexibility with common controller outputs, so you're not locked into a single trigger type. A concrete limitation: the 3A output means you need to add up your lock and device current draws; for anything exceeding that, this supply won't be enough.
Meaningful Trade-offs
The biggest trade-off is the current ceiling. At 3A, this is a supply for modest loads-think a single electric strike or a couple of low-current magnetic locks. If your system includes multiple high-draw devices or you're planning to expand, you'll want a higher-current power source. The physical size (10.4 x 6.8 x 3.2 cm) is compact, but make sure you have a clean, accessible spot to mount it for wiring.
Bottom Line
At $12.55, this power supply is a sensible, low-complexity option for a single-door access control project. It brings the essentials without overcomplicating the wiring. Just verify your load before you commit.
