Choosing between a 24V industrial DIN-rail power supply and a 12V access-control supply is not about which is better; it is about what your wired system actually needs. The decision starts with your load voltage. If your equipment runs on 24VDC, the 120W 24VDC DIN Rail Power Supply becomes the obvious candidate. If you are connecting electric locks or an access control controller that expects 12V, the 3A 12V Power Supply Control for Door Access Control is built for that job. Here is how the two compare.
Quick Verdict
Pick the 120W 24VDC DIN Rail Power Supply when you have a 24V panel or machine. Pick the 3A 12V Power Supply Control for Door Access Control when your goal is to power a 12V door lock system. The 12V unit costs USD 12.55; the 24V unit costs USD 22.99. Price matters, but the correct output voltage matters more.
Comparison Table
| Feature | 120W 24VDC DIN Rail | 3A 12V Access Control |
| Listed price | USD 22.99 | USD 12.55 |
| Output | 24VDC 5A / 120W | 12VDC 3A / 30W |
| Input | 100-240V AC 50/60Hz | 110-240V AC 50/60Hz |
| Notable extras | Single-output industrial supply | Adjustable delay 0-15s, pluggable green terminal block |
| Use case | 24V control panels and DIN-rail gear | Door access control and electric locks |
Where Each Product Wins
Stick with the 120W 24VDC DIN Rail Power Supply for a standard 24V industrial panel. For a door access-control installation that needs 12V and wiring conveniences, the 3A 12V Power Supply Control for Door Access Control is the one. The output voltage of your existing devices decides the winner before price does.
Product Notes
120W 24VDC Industrial DIN Rail Power Supply
Choose the 120W 24VDC DIN Rail Power Supply when your control panel is built around a 24V DC bus. It delivers 24VDC at 5A, supports 100-240V AC input, and lists an efficiency of at least 85%. That output capacity makes it a straightforward single-output power source for DIN-rail industrial use. The unit focuses on the power conversion side; if the project also needs access-control conveniences like lock wiring support, the 3A 12V access-control supply is designed for that role.
3A 12V Power Supply Control for Door Access Control
The 3A 12V Power Supply Control for Door Access Control is the practical choice for a door access-control project. It supplies 12VDC at up to 3A, uses 110-240V AC, and offers an adjustable delay from 0 to 15 seconds. The green terminal block and NC/NO wiring support show that it was designed for lock-controller hookups. It comes with a grey spray-painted metal case, and the package includes an English manual. The limitation is its output ceiling: at 12VDC and 3A, it is capped around 30W, so it cannot serve as a general-purpose 24V industrial power source. If your system uses 24VDC components, the 120W DIN Rail supply belongs in that cabinet instead.
Final Choice by Use Case
If your primary load is a 24V panel, choose the 24V DIN Rail unit. If your project is a 12V electric lock system, choose the 12V access-control unit. For a system with both, use the 24V supply for panel electronics and the 12V unit for the lock circuit.
