The LAN Toner is designed for the network installation and maintenance professional andcan be used on any wiring system including datacom, telecom, security/alarm, audio and CATV. Blinks HUB, Switch Port, and PC activity lights for fastidentification. Detect LAN hubs & switches. Provides tone signaling, continuity testing and telephone line polarity indication combined with a modular breakout adapter. Selectable tone outputs for identifying multiple cable runs. Includes multiple connection options.