Mastertech MS6812

Features ● Sound and Light Instruction    ● Cont and Tone LED Light     Applications    - Judge Continuity of the Cables or Wires    - Track the Cables or Wires, and Diagnose the Break Point    - Receive the Tone Signal on the Cables or Wires(Telephone Line)    - Identify the State in the Working Telephone Line(Clear, Ringing, Busy)    - Send a Single Solid or a Dual Alternating Tone to the Target Cables or Wires