HC-06 Bluetooth Module
OSOYOO 2WD Balance Car Robot Kit:
Arduino lesson – HC-06 Bluetooth Module:
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs). Range is approximately 10 Meters (30 feet).