Support voltage input 4.5-5.5V, can not exceed 5.5V
Supports full-duplex serial transmission
USB2.0 full speed data processing
HC-08-USB module is simple to use, the module is powered up, the
blue indicator light flashes.
Module is in AT mode, the module can not be used after the pair AT
command, this time a Bluetooth serial module is transparent mode,
the blue indicator light is not paired before.
Serial data transmission time (AT mode send AT commands on the
serial transparent transmission mode to send data communication
with other modules), the yellow light will flash at intervals based
on serial data transmission.