... SW_TC880 combines the conventional TDR method and Bridge Method for fault detecting, faults like open circuit, short circuit, ... Balance, Differential, BridgePOWER: Two Li-Ion cells, 5 hours for continuous use, 5 minutes auto power off after last key operation .CHARGING ... Test Cablel Chargerl One CD, PC software for data transferl Bag1.5 OperationThe instrument interface is easy and friendly to ...