How to record audio from a lavalier radio system on a computer?

Question

Microphones

P - receiver
T - transmitter
Model: boya by-wm5
Based on this diagram. How to record sound on a computer? The receiver has a 3 pin output. The computer does not recognize it as a microphone. Or maybe it is not necessary? Maybe there is an opportunity to somehow pick up sound from the receiver? I can hear the sound in the headphones themselves. The interesting thing is that you can swap the 3-pin jack and headphones in places.
I also have a cable if needed.
M - Microphone
input H - Headphone input

Answer 1

Connect a three-pin cable parallel to the headphones to the receiver and connect it to the line-in input of the audio card.