USB to 4Ch Serial RS485 Converter

Marsoni

M251S

$49.00

Get it in 3 business days with 1 day shipping. Friday, May 29

USB to 4Ch Serial RS485 ConverterUSB to 4Ch Serial RS485 Converter Features: Extending USB to 4CH RS485, allows concurrent and independent communication for each channel Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti electrostatic Onboard resettable fuse and protection diodes, ensures the current voltage stable outputs, provides over current over voltage proof, improves shock proof

Easy Shipping

Quick Dispatch:

Your USB to 4Ch Serial RS485 Converter orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your USB to 4Ch Serial RS485 Converter ships.

Need Help?
Questions about USB to 4Ch Serial RS485 Converter, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for USB to 4Ch Serial RS485 Converter in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

First off, it didn’t even come with the charging chord, so I had to order another separately after it came. The product broke the fourth time i used it, the whole thing came apart when i tried taking my phone off. When it was working, it charged maybe 1% every hour. Definitely not the best choice in the category, look at other options

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 21, 2025

Verified Purchase

PRIMEMASTER

Fort Morgan, US

★★★★★ 5

Super stable, strong magnet, fast, charging Tesla screen mount

Style: 15W Charger

This is a great item. It’s adjustable annd attaches firmly and no tape no adhesive. I’ve been using it for several weeks now charges the phone very fast.. The phone has never fallen off of it. Not even close. Highly recommend this item.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on August 20, 2025

Verified Purchase

Ljcollas

Whiting, US

★★★★★ 4

Works great, but included cable is too short

Style: 15W Charger

The cable included is only about 3 feet long and has a USB-a plug. Teslas now have only USB-c outlets, so the cable is useless anyway. If the cable were 6’ long and type USB-c, it could be tucked under the molding and hidden. I had to get another cable to complete the installation. I like this mount/charger because it is nondestructive - it doesn’t use tape or glue to install. The magnet is strong and it charges my phone quickly.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 2, 2024

Verified Purchase

Erin Magers

Los Angeles, US

★★★★★ 3

Decent but magnet isn’t strong enough

Style: 15W Charger

Unit appears well made and I feel like it minimizes any potential damage to the screen. For me, magnet just wasn’t strong enough and I wasn’t a fan of the cable - would be nice if product had clips for cable management or something to give it a cleaner install. If it wasn’t for the magnet issue, I probably would have kept. Returned.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 24, 2026