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The headphone symbol appears inthe display screen whenyou connect anexternalaccessory,
such as a headphone,microphone or externalPTT.It is also possible to choose theinternal
loudspeaker whenusinganexternalspeaker mic.
Connector type:3,5mm 4 pole jack.
When usingan accessory,the radio will no longer be waterproof.
The antenna andjack cover must be correctly assembled on the radio in
order for it to becompletely waterproof.
Accessories should not be usedwhen usingthe Tron TR30 inthe emergency
mode.