User Manual（FCC Version Draft）
This manual is applicable to the following product:
P53U,BF-1903,P53UH,P53UL,P53X，P54U,BF-1904,P54UM,P54G,P54X
Installing the battery pack
Before attaching or removing the battery make sure your radio is turned off by turning the power/volume knob all the way
counter-clockwise.
a.
Make sure the battery is aligned in parallel with the radio body with the lower edge of the battery about 1-2cm below
the edge of the radio.
b.
Once aligned with the guide-rails, slide the battery upward until you hear a click as the battery locks in place.
Remove the battery pack
To remove the battery, press the battery release above the battery pack, as you slide the battery downward.
Installing the Additional Speaker/Microphone (Optional)
Pry open the rubber MIC-Headset jack cover and then insert the Speaker / Microphone plug into the double jack.
Main controls and parts of the radio
