Vertex Standard HX760S - Manual (Page 17)

Page 17 HX760S
h Thermo Sensor
To measure a water temperature, soak the radio so the sensor is covered
by water for several minutes to see the actual water temperature.
NOTE
It may take a few minutes for the temperature to register correctly.
NOTE
The temperature sensor may not display the correct temperature
when the internal temperature of the radio is to hot; for example,
while transmitting a lot so the radio becomes hot.
i Microphone
The internal microphone is located here.
j Speaker
The internal speaker is located here.
k Battery Pack Lock (Bottom side)
Turn the Battery Pack Lock to the “OPEN” position for battery removal.