When you need a power supply for an industrial or access control setup, the first split is usually the output voltage and the mounting method. The two units here take different approaches: one is built around door access hardware, the other for control panels. The price ranges from $12.69 to $44.99, but the real decision is about fit.
Quick Verdict
If you're wiring an electric lock, the access control supply with its adjustable delay is a direct match. If you're working inside a control cabinet, the rail-mounted supply gives you the panel-ready mounting you need. The price gap is meaningful, so pick based on electrical requirements first.
Comparison
| Feature | 12V 3A Power Supply Control | NDR-120-24 DIN Rail Power Supply |
| Output | 12V DC, 3A | 24V DC, 5A |
| Target use | Door access control | Industrial control panels |
| Price | $12.69 | $44.99 |
Where Each Product Wins
The access control supply wins for door-specific projects. Its adjustable delay lets you control how long a lock stays energized, and the pluggable terminal block simplifies wiring. That makes it a natural companion to electric locks and electromagnetic locks.
The DIN rail supply wins for industrial panels. Its rail mount is the standard way to secure supplies in control cabinets, and it's rated for indoor or outdoor installation. The inrush current rating of 5A is a helpful detail when planning upstream protection.
Product Notes
12V 3A Power Supply Control for Door Access Control Access Control Power Supply
This grey, metal-bodied unit is a complete access control supply with pluggable green terminal blocks for wiring. It accepts AC 110-240V input and outputs 12V DC at 3A, and the delay adjustment can be set from 0 to 15 seconds. That adjustable timing is the standout reason to choose it: you can fine-tune how long an electric lock stays unlocked after a signal. It comes with a Chinese & English manual, and the installation requires a standard electrical connection. The main limitation is its focus: it's built for access control installations rather than control cabinet rail mounting.
NEW NDR-120-24 Industrial DIN Rail Power Supply ouput 24 Volt 5 Amp 240 Watt
This blue supply is made to snap onto a DIN rail, which is the standard mounting method in many industrial control panels. It provides 24V DC at 5A, and the inrush current rating of 5A can help you choose the right upstream protection. The unit is listed for indoor or outdoor installation, so it can handle a range of environments. The main reason to pick it is the rail-mounted combination of 24V output and 5A current, which suits a lot of industrial control gear. The limitation is that the 24V output won't directly power door lock hardware.
Final Choice by Use Case
For door access hardware that uses a separate controller, the $12.69 access control supply keeps the budget low and gives you the delay adjustment you need. For control panels that rely on rail mounting, the $44.99 DIN rail supply fits the cabinet and provides the higher voltage that many industrial circuits expect. Pick the one that matches your existing wiring and mounting, rather than choosing by price alone.
