... long-distance diagnose functionWay of pay-offSpooler pay-off,high pay-off frame, type pay-off,duck-nip pay-off,can pay-off without stop workWay of take- ... upSpooler take-up, trunk take-up, headstand take-up, and all can take-up wire ... stop at fixed length automatically, wire broken test and stop work automatically,cut off any block to compose new ...