Telex RadioCom BTR-200 II Operating Instructions Manual page 21

High/ Low Switch: Along with setting the
DIP switch inside the unit to correspond to the
wired intercom you have selected to use, you
must also set the "High/Low" switch. This
switch is also located inside the BTR-200 as
shown in Figure 18.
For the correct setting corresponding to your
wired intercom unit see Table 2. The switch is
factory set for use with Telex AudioCom or
RTS wired intercoms.
FRONT
SEE DETAIL A AND B
LOW
HIGH
Figure 18
Location of High/Low Switch
Telex
AudioCom
RTS
Clearcom
Detail A
High Setting
Detail B
Low Setting
-18-
Switch See
Setting Detail
High
High
Low
Table 2
A
A
B