GROUND SUPPORT HEADSET AND CABLE TESTER 511-20020GROUND SUPPORT HEADSET AND CABLE TESTERTesting of Intercom Headsets and CablesPocket SizedUses a Single 9V BatteryActivates When the Plug is InsertedProduct CodesMfr Part No:511-20020ECCN:5A991SCHEDULE B CODE:8518.30.2000..