19800-009 Buttset Harris TS19 Test Set withAngled Bed-of-Nails Clips - DataSafe - High-Impedance Monitoring - Clip onto a line monitor mode without disrupting data traffic. - Safety clip on to monitor and trouble shoot phone lines - 18 month warranty - Polarity indication: to identify polarity of the line - Audible ringer for callbacks - Tone and Pulse operation - For use with computerized voice response system - Speech signal levels compensated for loop length - Last number redial - Hearing aid compatible receiver - Replaceable heavy-duty braided line cord - Replaceable locking spring-loaded belt clip HC19800009