BSM-200 - Telephone Test Set (Pocket Size)

Mega Ohm mW Meter for Testing Insulation Resistance and Determining Line Conditions without Help from the Central Office. High Impedance Monitor Mode so not to Disrupt Conversation or Data Transfer. Other Convenient Functions Include: Last Number Redial, Hook and Flash, Speaker Phone, Mute, Polarity Check, Battery Check, Touch Tone, and Pulse Dialing.