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Description
ZK-4KX CNC DC-DC Buck Boost Converter Module CC CV 0.5-30V 4A Adjustable Step Down Up Voltage Regulator, 0.5-30VFeatures 1. Made of high quality material, solid, durable and strong conductivity. 2. Large LCD can display input output voltage, output current output power output capacity output time, easy to read. 3. CNC adjustment is very accurate and fast, and it also can boost and step down voltage. Output voltage can be adjusted from 0. 5 30v, while the current can be adjusted 0 4A as you desired. 4. It features anti reverse connection protection of input end,
Features1. Made of high quality material, solid, durable and strong conductivity.
2. Large LCD can display input/output voltage, output current/output power/output capacity/output time, easy to read.
3. CNC adjustment is very accurate and fast, and it also can boost and step down voltage. Output voltage can be adjusted from 0.5-30v, while the current can be adjusted 0-4A as you desired.
4. It features anti-reverse connection protection of input end, which will not burn out, safe to use.
5. Anti-reverse irrigation at the output end, no additional anti-reverse irrigation diode is needed to charge the battery;
6. The module can be set to open/close by default, easy to use.
7. It has multiple software protection mechanisms are available, and the protection threshold is adjustable.When the working parameters of the module exceed the protection threshold, the output will be automatically closed.
8. Output ripple is small and PI filter is available.
9. Thicken radiator fins helps the module to dissipate heat quickly, long service life.
Specification
1. Input Voltage: 5.0-30v
2. Output Voltage: 0.5-30v
3. Output Current: It can work stably at 3A for a long time, and can reach 4A under enhanced heat dissipation.
4. Output Power: Natural heat dissipation 35W; Strengthen heat dissipation 50W
5. Voltage Display resolution: 0.01V
6. Current Display resolution: 0.001A
7. Conversion Efficiency: About 88%
8. Soft Start: Yes (The soft start may fail when it starts with high power and load module.)
9. Material: Fiber glass board, Electronic component
10. Size: 7.9 x 4.3 x 2.6cm
Protection Mechanism
1. Input Anti-reverse Connection;
2. Output Anti-reverse Irrigation;
3. Input Under voltage Protection (4.8-30V adjustable, default 4.8V)
4. Output Over voltage Protection (0.5-31V adjustable, default 31V)
5. Output Over current Protection 0-4.1A (adjustable, default 4.1A)
6. Overpower Protection (0-50W adjustable, default 50W)
7. Over temperature Protection (80-110 degree C adjustable, default 110 degree C)
8. Timeout Protection (0-100h adjustable, OFF by default)
9. Super Capacity Protection (0-60AH adjustable, OFF by default)
10. Operating Frequency: 180KHz
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
excelente compra
Style: ET-5150, Set: ET PRO FAX/ADF/PRINT/COPY/SCAN
Excelente producto, buen precio, rapida entrega, recomendado
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Reviewed in the United States on June 2, 2026
★★★★★ 4
Good value
Style: ET-5150, Set: ET PRO FAX/ADF/PRINT/COPY/SCAN
I think 3.5 would be about right.
I had a Canon color laser printer that I loved! The problem was that after 6 years it started to need name brand toner at $45/each. I decided to co for something that would print cheaper, because it turns out I don't print as much as I used to, so having a commercial printer is no needed.
I like the tanks a lot and they are super easy to fill. The first fill does not use a whole bottle, but then it settles and the next day you can top off the tanks with the rest of the bottle.
The print quality is good. I have printed a few hundred pages and it is working as it should, and the tanks don't seem to have dropped but a touch. Much cheaper than toner for sure.
The weird thing is that when you scan, it does not know that there is paper in the feeder, so you hear the flat bed scanner run first, and then the tray starts feeding. Also, it prints on both sides, but it does not scan both sides automatically with the feeder, you have to flip each sheet. This is a serious bummer for me as I do a lot of 2-sided scanner.
So far so good. If things go south I will revise.
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Reviewed in the United States on August 22, 2025
★★★★★ 5
18 months and going strong
Style: ET-5150, Set: ET PRO FAX/ADF/PRINT/COPY/SCAN, Style: ET-5150, Set: ET PRO FAX/ADF/PRINT/COPY/SCAN
Edit 1/18/26: 2 years in, and I just topped off the ink. I used the extra bottle of black that came with it, and bought a set of color ink for the first time. Love it.
Original: I’ve had this printer for 18 months and love it. I haven’t even had to refill the ink yet! I print a fair amount, not constantly, but I homeschool and print things for church and scouts also. I’m able to connect easily from my Windows laptop, Mac desktop, and iPhone. Automatic double sided printing is great. Color printing is good quality. Printing on card stock can get jammed, but there’s a rear bypass for that. It’s annoying that you have to do a single sheet at a time, but oh well. Copying and scanning is handy.
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Reviewed in the United States on July 27, 2025
★★★★★ 5
The Perfect Printer
Style: ET-5150, Set: ET PRO FAX/ADF/PRINT/COPY/SCAN
This is the perfect printer! I love the paper loading tray that holds a ton of paper, and the sophisticated scanning hinge AND THE TOUCHSCREEN! Other printer's I have owned have had the weirdest buttons, but this is so clear and easy to use. We were replacing a broken black and white printer and upgraded to a color printer. We had an eco tank before (LOVE THEM!) so we knew we wanted an eco tank printer again. Honestly I cannot find a single downside of this printer. For Mac users, know that the CD that comes with it is unnecessary :) Just go online per the instructions to grab the Epson software and you'll be set! Full context: My husband and I are small business owners and we love having an in-home printer!
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Reviewed in the United States on September 19, 2025
★★★★★ 5
Great Investment Printer
Style: ET-5850, Set: FAX/Print/Copy/Scan
This is a great overall printer, especially for a home office or small business setup. It prints quickly, handles everyday documents with ease, and the EcoTank system is very convenient and cost-effective over time.
Honestly, it could even hold its own in a regular office environment because of how efficient and fast it is. It is also easy to connect to from a phone, laptop or computer. It was compatible with all the devices and computers in my household, even those with Windows 10.
That said, if your main goal is printing high-quality photos, this wouldn’t be the best option Epson offers. Photo quality is decent, but not exceptional. If photo printing is important to you, I would recommend looking into the Epson 8550 instead.
Overall, a solid, reliable printer for everyday use—just not the top choice for photo-focused needs.
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Reviewed in the United States on March 23, 2026