The LAN Toner is designed for the network installation and maintenance professional and can be used on any wiring system including datacom, telecom, security/alarm, audio and CATV Blinks HUB, Switch Port, and PC activity lights for fast identification Detect LAN hubs & switches Provides tone signaling, continuity testing and telephone line polarity indication combined with … <a href="https://www.tempocom.com/products/tonerlan-at8l/">Continued</a>