Users Manual

GV300CAU Series User Manual
1.3. Terms and Abbreviations
Table 3. GV300CAU Series Terms and Abbreviations
Abbreviation Description
AGND Analog Ground
AIN Analog Input
DIN Digital Input
DOUT Digital Output
GND Ground
MIC Microphone
RXD Receive Data
TXD Transmit Data
SPKN Speaker Negative
SPKP Speaker Positive
QSZTRAC
GV300CUM0101 3
Bluetooth
The device role of Bluetooth could be Master and Slave. When the device role is Slave, the device will
provide below services:device information service,battery information service,virtual serial port
service.Other devices can read or use these services after connecting devices. When the device role is
Master, the device will provide below services: the others devices can read or related information of the
designated Bluetooth devices. After reading the data, the server can be reported to the server by the
corresponding message.
The device's FCC ID: YQD-GV300CAU
Contains FCC ID:XMR201805EC21AU