When you're wiring an electric door strike or an electromagnetic lock, a small access control power supply has to do several jobs at once: convert AC to 12V DC, provide enough current for the lock, and hand over NO/NC switching with a release delay. These two listings are aimed squarely at that task. They look similar in name and spec sheet, but their listed prices differ, and the title wording is reversed. Here's how to choose between the 12V 3A and 3A 12V versions.
Quick verdict
Both listings describe the same access control power supply role, so the decision is mostly about title wording and listed price. The specs that matter are shared by both units. If you want the lower listed price, the 3A 12V unit is the one. If you want the title to lead with voltage, the 12V 3A unit is the one.
Listed-price comparison
| Listing | Listed price | Price bar | Specs at a glance |
|---|---|---|---|
| 12V 3A Power Supply Control for Door Access Control Access Control Power Supply | USD 12.69 | 12V 3A, 30W, 0-15s delay | |
| 3A 12V Power Supply Control for Door Access Control, Access Control Power Supply | USD 12.55 | 12V 3A, 30W, 0-15s delay |
The price gap is only USD 0.14, and both listings include the same package contents: an access control power supply controller and a Chinese & English manual. Neither listing separates itself with a functional feature.
Where each product wins
The 3A 12V unit wins on listed price. It is the lower-priced of the two, and because the core specs are shared, you are not trading away current or delay adjustability. The 12V 3A unit wins on title wording if you want the product name to begin with "12V 3A" and include the full "Power Supply Control for Door Access Control" phrasing. Everything else is described the same way in both listings.
Product notes
12V 3A Power Supply Control for Door Access Control Access Control Power Supply
This listing sits at the higher end of the pair's price spread. It shares the grey spray-painted metal housing, pluggable green terminal block, and adjustable delay with the other unit, and the package contents listed are the controller and a Chinese & English manual. Choose it if you want the title to lead with voltage and read "12V 3A Power Supply Control for Door Access Control Access Control Power Supply" in your order records. The trade-off is the higher listed price of the two, since the functional spec set matches the other listing.
3A 12V Power Supply Control for Door Access Control, Access Control Power Supply
This listing sits at the lower end of the pair's price spread. It describes the same AC 110-240V input, DC 12V output, 30W power, and 0-15s delay adjustment, and the included items are the controller and a Chinese & English manual. Pick it if you want the lower listed price or if you prefer a title that starts with the current rating, "3A 12V," before the voltage. The trade-off is the title order: if you want a product name that begins with voltage, this one does not give you that format.
Final choice by use case
If you are choosing purely on listed price, the 3A 12V Power Supply Control is the more economical pick. If you want the voltage-first naming and do not mind the higher listed price, choose the 12V 3A Power Supply Control. For a straightforward door access install where the two listings describe the same power output and delay control, the lower-priced 3A 12V unit gives you the same core specs for less.
