The Triplett WireMaster FireFly is a rapid LAN mapping tool that will help map large LAN systems in a fraction of the time of other traditional testers. This Rapid LAN Mapper offers a quick and simplistic test to ensure proper LAN Mapping. With the included 100 reusable remotes users can now map large LAN systems with ease and the ability to add addition remotes (PN: 3291) leaves for endless mapping possibilities. Other functions include a continuity test and magnetic back for easy mounting. Founded in 1904, U.S.-based Triplett Test Equipment continues to be on the leading edge of specialized testers. Whether supplying vital test equipment to the U.S. Signal Corps during WWII, or providing the railroad industry with essential testers to ensure the safety of their crews and the public, Triplett prides itself in developing innovative, reliable, and durable test equipment for every technician--that also won't break the bank.