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The HARRIS DRACON TS22AL "Butt-In" test set employs an integrated circuit design to provide both DTMF and dial pulse output. It also provides last number redial and repertory memory (auto dial) for 9 individual numbers. This TS22AL is a self-contained, mutually powered (by line and 9 volt battery once off hook) combination handset. It is used by installers, repair technicians, and other personnel for line testing and temporary communications. This unit has an amplified speaker, Data Lock-Out.
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