The PE930 test sets intended to troubleshoot communication circuits.

They include the following features: 

• Three Operating Modes: Talk, Monitor, and Off

• Tone or Pulse Dialing

• Mute Function

• Automatic Overcurrent Detection and Limitation

• Storage of up to 10 Telephone Numbers

• Two-Tone Ringer with Adjustable Pitch

• Sealed Electronics

• Waterproof (IP67)

• Buoyant — Floats if Dropped in Water

• Chemical Resistant