Specifications: The TSĀ®30 Test Set top features include:
High impedance monitor mode
Automatic regulation of speech levels
Tone and pulse operation
Last number redial in tone and pulse modes
RainSafeā¢ weather protection for use in extreme weather conditions
Hook flash button
Fully functional with either line polarity
Audible electronic ringer for call backs
High current and over voltage protection
High impact polycarbonate case
Field replaceable spring-loaded belt clip
Hearing aid compatible receiver
Transmitter Mute switch
Talk and Monitor modes
Ergonomic design
Lightweight unit is easily transported
Holiday Shipping Details & Extended Holiday Returns 
