I thought this lot of 5 was a good value. Even though they're advertised as 1 amp., mine were marked "1.25 amps". I did do some constant current testing. Up to and at 100 ma, the voltage was constant at about 12.1 VDC. As I increased the load up to 1.25 amps, the voltage dropped a few tenths ending up at 11.6 VDC at 1.25 amps. Pretty good regulation over a large current range. Although most of the projects I build require 5 VDC, there is some hardware, like some LED strips, that require 12 VDC. Also, I have started using these supplies even with projects that require 5 VDC. To use them, the pr
9.2Our score 4 photosJC TECH(UL-Listed) 12V 1 AMP Power Adapter LED Power Supply 110V AC to 12V DC Transformer Lighting Power Adapter for LED Strip Lights, IP Phone, CCTV Camera, and Low Voltage Devices| 5 Pack - Black
Input: 100-240V ~ 50/60Hz 0.5A; output: 12V 1A (1000MA)
About this item
- Input: 100-240V ~ 50/60Hz 0.5A; output: 12V 1A (1000MA)
- Output voltage range: 11.4V Min./ 12.6V max.
- Cord length: 56in./ connector size: 5.5mm x 2.1mm (10mm long)
- Minimum efficiency: 77.75-Percent at 115 VAC input and full output load
- Trademark: R-Tech registration# 4777168 dve UL listed E135856
Input: 100-240V ~ 50/60Hz 0.5A; output: 12V 1A (1000MA)
Ranked #99 in Accessories · 4 things we like
Quick answer The JC TECH by R-Tech scores 9.2/10 with us. Amazon owners rate it 4.6 out of 5 across 3,761 reviews, above the 4.4 average of the 31 ac adapters we track. It was listed at $22.99 on Amazon when we last checked in September 2026.
Input: 100-240V ~ 50/60Hz 0.5A; output: 12V 1A (1000MA) Output voltage range: 11.4V Min./ 12.6V max. Cord length: 56in./ connector size: 5.5mm x 2.1mm (10mm long) Minimum efficiency: 77.75-Percent at 115 VAC input and full output load Trademark: R-Tech registration# 4777168 dve UL listed E135856
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Product information
24 specifications| Connector Type | Barrel Connector |
|---|---|
| Compatible Devices | Speakers |
| Compatible Phone Models | CCTV |
| Special Features | Short Circuit Protection |
| Input Voltage | 240 volts |
| Amperage | 1 A |
| Wattage | 60 watts |
| Output Current | 1 A |
| Output Voltage | 12 volts |
| Power Source | Corded Electric |
| Current Rating | 1 A |
| Frequency Range | 60 hertz |
| Main Power Connector Type | 2 Pin |
|---|---|
| Number of Power Levels | 5 |
| Voltage | 12 volts |
| Current | DC |
| Connectivity Technology | DC Barrel |
| Mounting Type | Wall Mount |
| Color | Black |
| Enclosure Material | Plastic |
| Brand | R-Tech |
| Built-In Media | R-Tech New 12V 1A Switching Adapter Power Supply CCTV High Quality - 5 Pack |
| Model Number | DSA-12PFG-12/ DSA-12PFT-12 |
| Model Name | R-Tech New 12V 1A Switching Adapter Power Supply CCTV High Quality - 5 Pack |
Pros & cons
- Input: 100-240V ~ 50/60Hz 0.5A; output: 12V 1A (1000MA)
- Output voltage range: 11.4V Min./ 12.6V max.
- Cord length: 56in./ connector size: 5.5mm x 2.1mm (10mm long)
- Minimum efficiency: 77.75-Percent at 115 VAC input and full output load
JC TECH: questions & answers
Is the JC TECH worth buying?
Yes, it is one of the stronger picks in its group. We score the JC TECH 9.2 out of 10. Amazon owners rate it 4.6 out of 5 across 3,761 reviews, above the 4.4 average of the 31 ac adapters we track.
How much does the JC TECH cost?
It was listed at $22.99 on Amazon when we last checked in September 2026. That is more than the $16.99 median for ac adapters in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.
What options does the JC TECH come in?
Amazon lists 2 options. Style: 5 Packs, Pack of 160. Pick an option on this page and the button opens exactly that model.
What are good alternatives to the JC TECH?
Similar, well-rated ac adapters in our catalog: ALITOVE 12V Power Supply 6A 72W AC to DC (9.2/10, 4.6 stars from 442 owners); NC 24V 1A AC Adapter Power Supply 100-240V AC to (9.0/10, 4.5 stars from 811 owners); ALITOVE 12V Power Supply 10A 120W AC Adapter (8.8/10, 4.5 stars from 4,583 owners).
ALITOVE 12V Power Supply 6A 72W AC to DCNC 24V 1A AC Adapter Power Supply 100-240V AC toALITOVE 12V Power Supply 10A 120W AC Adapter
Customer reviews
All reviews on AmazonBreakdown from the 9 most helpful reviews we imported.
Work well with the device
These are great for the money. I really enjoy the orientation of the prongs to the body of the device. Perfect for what I need.
This five-pack of 1 Amp adapters seems to be a good buy, and their "90-degree" design allows them to be plugged side-by-side into duplex wall outlets or normally-spaced outlet strips. When I "bench tested" the five units on 110V AC input, I found that their no-load outputs were between 11.98 and 12.00 Vdc (they are rated for 12Vdc @ 1 Amp output); I have load devices that are 400mA (0.4 Amp) each. The output voltages of the adapters dropped to 11.92-11.94 Vdc with one load device (0.4 Amp) connected, and to 11.85-11.88 Vdc with two load devices (0.8 Amp) connected. I did not try the adapters w
They shipped the wrong item. The order was for 12vdc 1a power supplies. I received 12vdc 2a supplies. Luckily it worked for my project.
I have some light stips that took some time to put up. well, 3 of 10 of them went out because the power supply failed. I cracked open the power suppy using a vice, mostly because it was cool to do that, but also to see what was inside that failed, shure enough black blown components. Ok, so after that useless sentence, what can I say about this product? I spliced in my wires from the old powersupply and the lights lit right up. The powersupplies seam robust enought and i have 2 left over now. Bonus.NOTE: When you buy this product you need to make sure of the following. 1. The voltage must be t
I had a frequency counter project that needed a 12volt DC supply. I selected this supply right away because it had an Underwriters Laboratory (UL) listing which helped me feel safe about the product and the 5-pack deal was terrific since I knew I would need a power supply for other projects in the future. And, the price was right! I have used this supply for testing for several weeks now and it works perfectly!I highly recommend this brand and I would buy it again.
I have bought a lot of these for my illuminated glass art and have only just this week have one stop working. I have some that have been working constant now for several years powering art glass. So far they have been pretty darn good. These pieces stay lit 24/7
Customer reviews are shown as published on Amazon and are not written by Do Best Deal.













