Model 390 telephone test set for premises wiring installation and repair technicians includes audible ringer, ten-number memory, redial, polarity indication, and high-impedance monitor. This test set is available with standard or ground start clips.
Model 390 telephone test set for premises wiring installation and repair technicians includes audible ringer, ten-number memory, redial, polarity indication, and high-impedance monitor. This test set is available with standard or ground start clips.
