Greenlee AT8K Tone Adapter Kit Designed for fast, accurate wire identification by combining the features of our tone generators and modular breakout adapter Kit includes the AT8 modular breakout tone generator and 200EP inductive amplifier in a convenient carrying case The AT tone generator makes it simple to test continuity, polarity and send tone Combines the features of our tone generators and a modular breakout adapter The 200EP has a powerful 2-Inch speaker, one-button operation and adjustable volume control