NF-8601S Network Cable Tester: cat5, cat6, cat6A, cat7, coaxial, telephone, electrical, POE function (pulls voltage pins on them and voltage value), PING test, Wiremap up to defect, short-circuit, interrupted or cross-connection, crosstalk test for removing low speed problems, identifies the track without wire, measuring the length of data/coaxial/telephony cables (distance = 1-1000m) TDR method, 3% accuracy, for a specific type of cable for a more accurate measurement, cable length of at least 50m calibration, accurately locates the position where the cable is broken or shorted, cable tension detector (50V-1000V), 2.8 "LCD display, memory function , memory card included, import/export of data to the computer, automatic delay with delay, rechargeable Lithium battery 3.7V/1.8A, battery alarm, operating temperature -10 + 60 degrees Celsius, humidity 20 % -70%