Fluke Networks 52801009 TS52 PRO Telephone Test Set with Angled Bed-of-Nails and Piercing Pin Clips Displaybacklit LCD and glow-in-the-the dark keypad DataSafe Prosuperior high-impedance monitoring, lockout and override, making you completely safe in any mode; DropSafepasses 20-foot drop test; RainSafedesigned for use in rain conditions DSL/POTS Filtering Technologyallows technicians to clip on a live DSL line to test POTS service without downing or disrupting data service 2-way hands-free speakerphonefor true hands-free conversation Test Functions: (1) Data indicationwarns when data is present; (2) Voltage indicationtroubleshooting feature to identify potential line problems; (3) Current (mA) indicationverifies sufficient line current; (4) Caller-IDverifies service is functional; (5) DTMF Digit Grabbingisolate faulty customer premise equipment