- Philadelphia, Pennsylvania, United States
- Nov 16th
The Dracon TS21 Lineman's Test Set employs integrated circuit design to provide either a DTMF (Touch Tone) or a dial pulse output. This Test Set, often referred to as a "butt-in", is a self-contained, line-powered combination handset used by installers, repair technicians, and other authorized personnel for line testing and temporary communications. The TS21 measures approximately 2-11/16 inches wide, 3-11/16 inches high, and 9-11/16 inches long. It weighs approximately 21 ounces.