Sony WRT-810A Operating Instructions Manual page 7

Reduces noise caused
by the wind.
working range exceeding
30 m (98 feet).
RF power output select
switch
Selects RF power output Battery
2.5 mW or 10 mW. holder
2.5 mW: Suitable for a ;
working range of up to Grip
30 m (98 feet).
10 mW: Suitable for a |
AF switch
Switches on and
off the audio
input.
Wire antenna
<Display section>
(See next page)
WRT-820A
Wire antenna
Input connector
Connect the output connector of
one of the following optional
Sony lavalier microphones:
E a, ECM-44SC/BC
Ed, ECM-55SC/BC
ECM-66SC/BC
ECM-77SC/BC
ECM-166BC
You can also use your wired microphone
by connecting it to this connector
with an optional EC-1.5CF microphone
cable.
Pin assignment
4 t A1 +5 V output
2 HOT
3 COLD
3 2 4 GND
Battery holder
POWER switch
Setting this switch to ON puts the unit in transmission mode,
recalling the channel selection and the input attenuation setting.
Setting this switch to OFF turns off the unit, saving the
channel selection and the input attenuation setting.