Resi-Talker Test Set with Alligator Clip Set
Test-Um LB300 is the most economical test set for basic telephone system work
Tone and Pulse Dialing Microphone Mute Last Number Redial - 32 digits Continuous Line Polarity Indication (TALK or MONITOR) Electronic Ringer Amplified Line Monitor for volume levels comparable to "off hook" operation Modular Cord Set Attachment Low Battery Indicator Battery Powered Monitor Mode with auto power off on dead lines or when disconnected 
