$19.88
FREE International Returns
No Import Fees Deposit & $11.25 Shipping to Austria Details

Shipping & Fee Details

Price $19.88
AmazonGlobal Shipping $11.25
Estimated Import Fees Deposit $0.00
Total $31.13

Delivery Thursday, October 24
Or fastest delivery Tuesday, October 15. Order within 7 hrs 18 mins
In Stock
$$19.88 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$19.88
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Amazon
Ships from
Amazon
Sold by
DTECH Co.,Ltd
Sold by
DTECH Co.,Ltd
Returns
30-day refund/replacement
30-day refund/replacement
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Returns
30-day refund/replacement
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Payment
Secure transaction
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.

DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device

4.4 4.4 out of 5 stars 32 ratings
$19.88
FREE International Returns
No Import Fees Deposit & $11.25 Shipping to Austria Details

Shipping & Fee Details

Price $19.88
AmazonGlobal Shipping $11.25
Estimated Import Fees Deposit $0.00
Total $31.13

Coupon:  
 8% off coupon applied Shop items | Terms  
3 wire isolated adapter
{"desktop_buybox_group_1":[{"displayPrice":"$19.88","priceAmount":19.88,"currencySymbol":"$","integerValue":"19","decimalSeparator":".","fractionalValue":"88","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"IERJqM795ibE6EenXDKY4G9j%2Fpk223%2BxsQ2Fe2%2BCY1J0D2%2BHk26AKWQzOA6O2kYVPz4Eu9vol68MjS8uRZjSx0zdBKHkRXIZAKq7mBsnn9%2Fn3e%2BOdfx0zZiHmN2oPw55%2Bdckje%2FsstSIUomrY493IEBioB28D9rpB6jUxnWf4ikrV42bCWK9uuU%2FkUbxTBLE","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

Compatible Devices PC
Specific Uses For Product PC
Connector Type DB9
Color Black
Item dimensions L x W x H 2.6 x 1.3 x 0.7 inches

About this item

  • DB9 9 pin male to female serial converter - RS232 optical Isolator for RS232C system communication serial port optical isolation protector product
  • Mini RS232 opto isolator serial adapter is suitable to protect electric terminal devices using 3 wire system (TXD, RXD and GND), such as modem, router, RFID reader, radio, multi-user system and satellite receiver, computer, etc
  • DE9 RS232 isolated interface adapter protects against the effects of electrostatic discharge, surge, ground loop, faulty wiring and lightning
  • Bus-powered serial isolator RS232 surge protector supports RS-232 asynchronous communication standard, direct insert into RS-232 interface serially, convenient operation
  • For added convenience, the RS232C DB-9’s male / female genders are reversible with the included thumbscrews
› See more product details
Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

Consider a similar item

Anker USB C to HDMI Adapter (@60Hz), 310 USB-C (4K HDMI), Aluminum, Portable, for MacBook Pro, Air, iPad pROPixelbook, XPS, Galaxy, and More
(31942)
$11.99
Climate Pledge Friendly Climate Pledge Friendly

Frequently bought together

DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device
This item: DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device
$19.88
Get it as soon as Thursday, Oct 24
In Stock
Sold by DTECH Co.,Ltd and ships from Amazon Fulfillment.
+
USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7/, Mac OS X 10.6 and Above
$22.88
Get it as soon as Thursday, Oct 24
In Stock
Sold by Usbgear and ships from Amazon Fulfillment.
+
OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP
$11.99
Get it as soon as Thursday, Oct 24
In Stock
Sold by Oikwan and ships from Amazon Fulfillment.
Total price: $00
To see our price, add these items to your cart.
Details
Added to Cart
spCSRF_Treatment
These items are shipped from and sold by different sellers.
Show details Hide details
Choose items to buy together.

Compare with similar items

This Item
DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device
DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device
Recommendations
DTECH Serial Adapter 3-Pack (DB9 F-F, M-F, M-M), Mini Size RS232 Coupler, Female to Male 9 Pin Connector, for PC Computer Data Transfer
DTECH Serial Adapter 3-Pack (DB9 F-F, M-F, M-M), Mini Size RS232 Coupler, Female to Male 9 Pin Connector, for PC Computer Data Transfer
 
Cable Leader DB9 to HDD15 VGA Adapter (F/M)
Cable Leader DB9 to HDD15 VGA Adapter (F/M)
 
USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7/, Mac OS X 10.6 and Above
USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7/, Mac OS X 10.6 and Above
Details
Added to Cart
spCSRF_Treatment
Details
Added to Cart
spCSRF_Treatment
Details
Added to Cart
spCSRF_Treatment
Details
Added to Cart
spCSRF_Treatment
Price$19.88$8.98$6.99-47% $22.88
List: $42.99
Delivery
Get it as soon as Thursday, Oct 24
Get it as soon as Thursday, Oct 24
Get it as soon as Monday, Oct 28
Get it as soon as Thursday, Oct 24
Customer Ratings
4.44.4 out of 5 stars32
4.04.0 out of 5 stars76
4.14.1 out of 5 stars8
4.64.6 out of 5 stars1,210
Sold By
DTECH Co.,Ltd
DTECH Co.,Ltd
Cable Leader
Usbgear
connector type
DB9
DB9
VGA
DB9
number of ports
2
1
1
1
input voltage
9 volts
100 volts of alternating current
—
5 volts
power plug type
no plug
no plug
—
no plug

Product information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

Feedback

DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

Looking for specific info?

Product Description

DTECH 3 Wire RS232 Data Interfaces Opto Isolator for Typical isolated RS-232 communications link

Why take a chance on blowing up your COMM PORT this simple mini RS232 opto isolator device will protect your PC and RS232C devices, when plugging into an unknown device or plugging into one that has a short you can damage your comm port in a hurry!
This compact RS232 Isolator Optic Electric adapter is designed to protect the RS232 serial port at both ends of the device, inhibit static and surge, prevent ground loop and surge damaging devices.
Connection:
9 pin DTE devices transmit on pin 3 and receive on pin 2
9 pin DCE devices transmit on pin 2 and receive on pin 3

 Specific

Optic electric isolation voltage: Instant 2.5KV rms; Continous 500VDC
RS232 adapter's transmission Rate: 300 bps – 57600 bps
Power: self powered, Supply from RS232 (one of TXD / DTR / RTS)

Original Packing Included

1 x Port Powered RS-232 Isolator
1 x User Manual

Brands in this category on Amazon

Sponsored

Customer reviews

4.4 out of 5 stars
32 global ratings

Top reviews from the United States

Dennis J
5.0 out of 5 stars You MUST power up both DTE and DCE sides of the isolator.
Reviewed in the United States on March 7, 2020
Size: 3 wire isolated adapterVerified Purchase
Typically for ham radio use, the DTE side (Female 9-pin connector) is connected to a PC serial port and receives power from the DTR signal on pin 4 (a 9-pin plug on the PC). PC radio software has setup options to power this pin. When running Linux, remember to add yourself to the "dialout" Group or nothing will work.
You must also provide power to the DCE side of this isolator (Male 9-pin) on pin 4 from a source common to the isolated equipment (e.g. a rig interface). If a setup parameter on the rig interface does not offer this option, a 9V battery negative (-) side to pin 5, positive (+) side to pin 4 through a 10k resistor will work. This is on the side facing into the serial port of the rig interface.
Upon testing, the isolator will run with voltage from 3 - 9 Volts on pin 4. Please verify documentation of the rig interface to be certain there is not a conflict. Product literature included with the DTech isolator indicates it can also be powered via RTS on pin 7. That was not tested.
Overall, this product performs as advertised. I did not inject a 2500 VAC pulse or 500VDC to test isolation.
MY REQUEST TO DTech: Please let us know what isolator IC you use inside! Verification would have been much simpler and more complete.
4 people found this helpful
Helpful
 Report
Rene D Almeida
4.0 out of 5 stars Struggle to work at 57600BPS
Reviewed in the United States on August 17, 2023
Size: 3 wire isolated adapterVerified Purchase
The optocouler worked good at baudrates below 57600, unfortunatly for my application this would not work.
Helpful
 Report
RUSS
5.0 out of 5 stars This Device Works GREAT!!!
Reviewed in the United States on March 13, 2019
Size: 3 wire isolated adapterVerified Purchase
I had industrial equipment connected to a laptop about 50 feet away via RS232 with USB adapter into laptop.
I had many issues of laptop freezing or com port/usb issues related to this connection. I simply placed this device inline with RS232 near the laptop and no more problems. This is a very quick, inexpensive and amazing fix. The device somehow magically powers itself from the communications - no need for external isolated power sources... Works Great. I use mine at 19.2K baud, but it is rated for much higher speed...
2 people found this helpful
Helpful
 Report
Michael Carl
5.0 out of 5 stars It seems to work!
Reviewed in the United States on May 10, 2019
Size: 3 wire isolated adapterVerified Purchase
It seems to work! I am using this in an industrial setting to prevent static and shocks from reaching an RFID reader and a PC. So far it is transmitting the serial communications without any issues.
Helpful
 Report
PR
5.0 out of 5 stars Works flawlessly with my communications radio-to-computer connection at 9600 bps ...
Reviewed in the United States on January 12, 2018
Size: 3 wire isolated adapterVerified Purchase
Works flawlessly with my communications radio-to-computer connection at 9600 bps. No surge damage during several storms, with the radio connected to a ground system separate from the power entry safety ground.
2 people found this helpful
Helpful
 Report
Kindle Customer
1.0 out of 5 stars Does not work with Yaesu FT450D
Reviewed in the United States on February 25, 2020
Size: 3 wire isolated adapterVerified Purchase
This coupler does not work with the FT450D. I think it may not fully implement RS232, or maybe it's just defective. Either way it's going back.
2 people found this helpful
Helpful
 Report
starlightfarm
5.0 out of 5 stars Good product and good price and works very well
Reviewed in the United States on October 7, 2019
Size: 3 wire isolated adapterVerified Purchase
This product works very well for RS232 for Machine tools
Helpful
 Report
KAMAL AL DEEN M ALZIADY
5.0 out of 5 stars very good
Reviewed in the United States on December 12, 2019
Size: 3 wire isolated adapterVerified Purchase
good quality and packing
Helpful
 Report