Model DC 3690 Headset | Over the Head, Single Ear 20K132-3/86-0 The TP-105 telephone plug is

The TP-105 telephone plug is a five-conductor plug molded into a red plastic body

A high/open state maps the output to magnetic heading

It mates with Nexus part MP-101

and poling platforms

M8805/110-6149

Model DC 3690 Headset | Over the Head, Single Ear 20K132-3/86-0 The TP-105 telephone plug isSeries DC 3600 Headsets are designed to provide crisp, clear communications and superior comfort, ideal for UAV shelters, data vans, Command and Control vehicles and other low noise applications. The Model DC 3690 is a single ear, over the head style headset with a supra aural design (rest on ear), capable of affording comfort and communication clarity. It features the new M 5A electret noise cancelling microphone, delivering superlative speech