Portable Network Tester UNI-T UT681A Multi-Function Cable Finder Set With            Loop Resistance Test and Wire Sequence Scanning           Detailed:   • Cable Identification– Capable of identifying numbers of cables at the same time when it comes with supplied ID adapters • Toning Cable location – Locate the cables when matched with toner probe in the test; • Wire Sequence Scanning – Trace down the wire sequence • Port Blinking– Control Port blinking at a switch or hub to identify the cables; • Loop Resistance Measurement– To measure loop resistance  of PSTN Phones or ADSL twisted-pair cables, help to determine link quality for the communication;  Parameter:           Specifications     Best Accuracy           Model     UT681A           Toning Cable Location      √           Port Blinking     √           Cable ID     √           Wire Sequence Scanning     √           Loop Resistance Test     √           Features                Test Port     RJ-45 x1,RJ-11 x 1           User Interface     2.0'' LCD display, Resolution 128x64;LED x1;function buttonx5           Language version     Chinese operation menu           Working environment     Working temperature:0°C-40°C,storage temperature:-20°C-60°C,working humility:95%           General Characteristic                 Power     2 x AA alkaline cell or 2 x AA NiCd/NiMH battery              LCD Size     2.0''           Product Color     Red and Grey                 Product Net Weight     100g           UTN-01(Hunting pen)                Power     2 x AA alkaline cell or 2 x AA NiCd/NiMH battery  (not included package)           Test port     RJ-45 x1           User interface     LED x7 ;           weight     85g