Serial Check Tester With LEDs DB25 Male to DB25 Female 31D3-42200
Serial Check Tester With LEDs, DB25 Male to DB25 Female.
Excellent Activity Light Tester to check signals on Serial Devices.
Classic RS232 Serial Line Tested with LEDs.
UPC:820799310407
This Serial Check Tester With LEDs DB25 Male to DB25 Female 31D3-42200 is the best I've used. The picture and sound quality are top-notch and it's built to last.