Copper Media Testers: Tester Type - Data - Voice Cable; Application - RJ 11/12, RJ45 and Coax-F Connector; Display - LCD; Detects - Opens, Shorts, Split Pairs; Reports - Length, Wire Map; Range - ft - 1-1476; Dimensions - 6.29 in. x 2.99 in. x 1.41 in. (16.00x7.60x3.60 cm); Contents - (1) Tester, (1) Dual Port Remote Unit, (1) Coax Remote Unit, (1) Alkaline Battery, (1) Multi Language User Guide; Batteries - 9 volt Alk Battery