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ACCESSORY CONNECTIONS
■ External Speakers
If you plan to use external speakers, choose
speakers with an impedance of 8 Ω. The external
speaker jacks accept a 3.5 mm (1/8") mono
(2-conductor) plug. For best performance, we
recommend using the optional SP-50B speaker.
UP
DC 8 V, 200 mA max.
GND
STBY (PTT)
GND (MIC)
MIC
NC: No connection
DWN
■ Microphone
To communicate in the voice modes, connect a 600 Ω
microphone equipped with an 8-pin modular plug into
the modular socket on the front of the main unit.
Press firmly on the plug until the locking tab clicks.
Attach a microphone hanger to an appropriate
position using the screws included in the screw set.
Microphone hanger
Microphone hanger screw
(3 mm x 10 mm)