- TS30 Test Set with ABN- High impedance monitor mode- Automatic regulation of speech levels- Tone and pulse operation- Last number redial in tone and pulse modes- RainSafe? 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