Harris Corporation's new TS44 Test Set is equipped with new DataSafe Pro Data Protection Technology featuring superior high-impedance monitoring, data lockout and lockout override, making you completely safe in talk, monitor or override mode. Data lockout and override protection will alert the technician to the presence of data and only allow override if normal POTS voltage is detected. New patent-pending filtering technology allows a technician to safely draw dial tone on a live DSL/POTS shared line to test the POTS service while protecting the DSL from downing or disruption. No competing test set is available that can ensure this level of protection; now the industry standard at major phone companies.

Deluxe Test Set Features:

• Check for normal POTS voltage and the presence of data the moment you clip on the line
• Superior high-impedance monitoring
• Patent-Pending DSL/POTS filtering technologies
• Data Lockout
• Lockout Override
• Data indication/warning
• Low & high voltage indication/warning
• Low current (mA) indication/warning Durability & Exterior
• Waterproof case design for sever weather conditions, exceeds American Military Spec MIL-STD-810E
• DropSafeTM 20ft onto concrete
• Mountable, top or bottom, extra large steel locking belt clip
• Line cord strain relief
• Software upgradeable
• Passive monitor
• 2-Way hands-free speakerphone
• Low battery warning
• Mute indication
• Polarity indication
• Tone & pulse dialing
• (Optional) 1-Way amplified speakerphone mode
• Amplified speaker
• Last number redial
• Over voltage protection
• Over current protection
• Mute
• PBX pause button
• Audible ringer
• Speed dialing
• Volume control levels
• Line and battery powered
• Hearing aid compatible

Also known as a lineman's handset, a technician's test handset, a test set, or a butt set.