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.
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.