Fluke Networks 42801009 TS42DLX Telephone Test Set with Angled Bed-of-Nails Clips Detects dial tone and polarity, places and receives calls, indicates line voltage and current, and has a 2-way speakerphone for hands-free conversation during testing of telephone lines DataSafe operation with superior high-impedance monitor Advanced testing functions for low/high voltage and low (mA) current Ergonomic DropSafe case (20-foot) High fidelity, 2-way speakerphone for true hands-free conversations