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About SerialComm

SerialComm's industry proven reliable serial, USB & fiber optic converters at low prices are oferred with worldwide free shipping & sameday express shipping.

Our products are fully certified and come with a 30 day unconditional return guarantee and a 5 year manufacturer's warranty. When you buy SerialComm products you are buying the best quality, and that is very important when interfacing with expensive equipment. SerialComm products are industry proven are widely used by thousands of companies world-wide.

Here are some of our valued customers, just to name a few:

  • Allied Elec.
  • Cisco Telecomm.
  • Google
  • Johnson Controls
  • NASA
  • Raytheon
  • U.S. Army
  • AT&T
  • Comcast Corp.
  • Harris Corp.
  • L-3 Communications
  • Northrop Grumman
  • Rockwell Collins
  • U.S. Navy
  • BAE Systems
  • ESPN Broadcast
  • Honeywell
  • Lockheed Martin
  • Pacific Gaming
  • Siemens
  • USAF Academy
  • Boeing
  • Frys Dept. Store
  • IBM
  • Microsoft
  • Panasonic
  • Sirus Satellite
  • Wallgreens
  • Chrysler
  • General Electric
  • Intel Corp.
  • MIT Lincoln Lab.
  • Princeton U.
  • Tyco Telecomm.
  • Yesco
testimonials testimonials
  • We handle orders of any magnitude - large or small
  • We offer competitive wholesale pricing and dealer discounts
  • We can customize your order to meet your requirements


  • I am working with expensive industrial equipment. We have been interfacing with your products for the past 8 months now without a single failure. Your products are high quality and reliable. We would recommend them to anyone.


  • Thank you very much for your help, you have very good after sale services. Your technical support Engineer was very knowledgeable and helpful, I have no more problems, your product is highly recommended.


  • We Thank you for the converter. I had it by 10:30, had it running the application by 11:00 and found the problem with the system by 3:00 PM. The converter worked like a champ.


  • We had a requirement to communicate with a Pelco camera. We did not know anything about serial communications. SerialComm technical support was very patient and knowledgeable. They walked us through the connections and even recommended which product we should buy. We plugged it in and it worked on the first try. Thanks SerialComm.

  • Thanks for all your extraordinary efforts in helping us locate our lost package you sent. With your help, we found the package and was able to meet our critical deadline. We could have not done it without your help. We will definitely be doing business with you again.


  • I just wanted to send you a note of thanks for your extraordinary efforts in helping us with our project. We were able to meet our deadline and the devices worked beautifully. I am looking forward to future business with you.

  • After Just wanted to say thanks for your service. It was first rate. We ordered a very simple part - 3.3V TTL to RS232, but your guy was very helpful and the order was delivered on time. It saved our ability to continue our testing. This was a classic case of a $10 part stopping a massive project. I will be recommending you to anyone that asks..

Free World Ship
Same Day Express
5 Year Warranty
Money Back Guarantee
Custom Solutions

We are a full service company offering the highest quality converters at a low price.



Quality Guarantee - SerialComm converters are low priced, high quality products and made to last a lifetime. They are manufactured in a ISO-9001 certified facility using surface mount technology with lead free components.  All converters are pretested prior to shipment and are fully guaranteed for 5 years.  There are no converters, Commercial or Industrial that surpass SerialComm's quality standards at any price tag. Satisfaction Guarantee - We offer a 100% 30 Day Money Back Guarantee which most companies do not offer.  If for any reason, you 're not satisfied with your purchase within 30 days, you can return it with no penalties.  We will return the full value of the order minus shipping costs. We do not reimburse express shipping fees.  We do not add restocking fees when returning a purchase within 30 days. Manufacturer's WarrantySerialComm offers a 5-year Workmanship Warranty.  We are so confident our product are built to last, within a 5 year period from the time of purchase, if a rare event of a malfunction should occur; we will replace your product for free.  Fill out our RMA form and we will issue you a RMA number for return of your product.   We do not issue refunds after 30 days of purchase. Express Shipping Guarantee - We specialize in shipping express orders on-time.  If FEDEX express shipping is selected before 6:30 PM E.S.T. and the items are in stock; we guarantee that we will get the order delivered to FEDEX on-time for the scheduled express delivery.  If we fail do to so, we will ship you the package the next day and credit you the full value of the order. (LIMITED TO $100 PER ORDER).  Please refer to our Terms for full details.

Free Worldwide Shipping - We offer FREE shipping with all SerialComm products with TRACKING!  Not just to the U.S., we ship our products worldwide for FREE.   Given availability of items, they are shipped the next business day with an ETA of 2-5 days for domestic and 5-15 days for International orders using USPS, FEDEX or DHL couriers.  Express Shipping is extra and shipped the same day ordered.


Sales & Technical Support -We offer sales and technical support by phone, live chat and email 24/7.  Our sales team  provides immediate customer support such as taking orders or assisting in expedited shipping requirements.  If you need technical help, an experienced Electrical Engineer can offer assistance.  Our technical support team can be an invaluable service which we provide for free.


Purchase Orders - We accept purchase orders as well as credit cards and PayPal. We understand that many companies prefer to issue purchase orders rather than using credit cards.  We accept purchase orders with NET 30 terms in most cases.    Not too many companies on the internet are willing to accept purchase orders but we do.  Purchase orders can be faxed or emailed.


Fully Certified - Certifying Data Communication Products is extremely important for compatibility, safety and standards compliance.  All of our products are fully certified and passed CE, FCC and RoHS compliance tests.  These certificates provide confidence that our products are the highest quality while also environmentally safe and compatible with other devices.

Free Converter Pouch Plus Two Gender Changers with every purchase of over $100!

Included gender changers are DB9 male-to-male and DB9 female-to-female changers.