REMOTE END CABLE TESTER: Quickly troubleshoot faulty mic lines and cables. This two piece unit (Sniffer and Sender) allows you to test XLR cables without bringing the ends together making it the perfect tool for live and studio sound. TEST AUDIO SNAKES . INSTANT CABLE DIAGNOSTICS: Instantly test for every possible fault. XLR Sniffer / Sender AND COMPACT: All-analog units housed in rugged aluminum with a matte finish., Manufacturer: Akfldms