The Senal SMH-PIGTAIL is a replacement cable intended for use with SMH-series communication headsets. It can also be used to augment your headset's versatility—as well as your own soldering handiness—as it gives you the means to wire your SMH-series headset to whatever connection you choose.
At one end, you'll find the 2.5mm TRRS connector and corresponding locking jack; this twists into your SMH-1010CH or SMH-1020CH communication headset, establishing a secure and reliable connection all the while. At the other end, you'll note the previously mentioned unterminated wire, with which you can forge a connection to your preferred communication system.
The SMH-PIGTAIL is part of a whole ecosystem of SMH-series cables, all of which let you swap between the pin-outs of different communication and broadcast systems with ease.