★★★★★ 5
Great fit
Fit perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
RS232 To RS232 Repeater with Surge and 3-way Isolation Protection
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
RS232 To RS232 Repeater with Surge and 3-way Isolation ProtectionThe STS 1921SI RS232 to RS232 Isolation Adapter is designed for your PC, workstation, thin client, or server to provide an instant isolation solution to the serial devices. The STS 1921SI equipped a female DB9 connector that can be connected to your PC. The RS232 port, configured as a DCE port, has a female DB9 connector with pins for all RS232 signals (TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI and GND) are isolated coupled to the male DB9 connector
Quick Dispatch:
Your RS232 To RS232 Repeater with Surge and 3-way Isolation Protection 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 RS232 To RS232 Repeater with Surge and 3-way Isolation Protection ships.
Need Help?
Questions about RS232 To RS232 Repeater with Surge and 3-way Isolation Protection, 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 RS232 To RS232 Repeater with Surge and 3-way Isolation Protection in your area.
Get Shipping Estimates
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
You may also like
RS232 To RS232 Repeater with Surge and 3-way Isolation Protection
84.00
1 Gigabit Fiber SFP Transceiver, Single-Mode 10-120km SFP-S
23.00
Industrial 7-Port USB Hub, Metal Case, with Locking Feature. Supports USB 1.1 and 2.0
157.00
4-Port USB2.0 to Gigabit Ethernet Server
137.50
RS-232/422/485 To Fiber Converter, Multi-Mode 2KM, ST Connector
119.50
USB To 1-Port RS-232 (DB9M) with Surge and Isolation, 2.5M
152.00
Industrial 4-Port RS-232 to USB 2.0 High Speed Converter with Surge & Isolation
217.50
4.5 ★★★★★
Based on 2382 reviews
Sort
Product Reviews
★★★★★ 5
Great filter
Works fine didnt have to pay for the shop to put it in so great savings.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
DIY, super easy to replace.
Fit 2018 crv. I like to change out my air filters before taking my car to the dealership for an oil change. Saves a ton of money to DIY. Easy to do perfect fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Ok
Ok
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 5
make sure you get the right one for your model and engine
Fit was perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
