Sennheiser RS165 - Product Component Identification; TR 165 Transmitter Layout

Product overview
RS 165 | 7
Overview of the TR 165 transmitter
1 TR status LED
2 B
ASS button (with LED)
3 Charge status LED
4 Charging contacts
5 AUD
IO IN Analog audio input (3.5 mm jack)
6 DC 9V
0.3A socket for the power supply unit
AUD
IO
IN
4
2
5
3
1
6