Hobbes 256850 Pro NETmapper is a hand-held multifunctional network-testing device that integrates On-Line/Off-Line and telephone line test functions in one tester. For On-Line testing, it operates as a workstation; ping network devices and illustrates the machine name/IP address/MAC address and identifies all the network devices including Router, Printer and PC Host...etc. For Off-Line testing, it operates as a professional cable checker. Hobbes 256850 Netmapper Pro has an integrated Digital Tone Generator and Port Finder functions to trace and identify cables with precision. Hobbes 256850 Netmapper Pro works as an all in one full functional tester and a very useful tool for all professional network administrators to quickly verify network connectivity and obtain essential information from the entire networks for troubleshooting and maintenance.