Bluetooth is a standardized protocol for sending and receiving data via a 2.4GHz wireless link.It's a secure protocol, and it's perfect for short-range, low-power, low-cost, wireless transmissions between electronic devices.
The Bluetooth protocol operates at 2.4GHz in the same unlicensed ISM frequency band where RF protocols like ZigBee and WiFi also exist. There is a standardized set of rules and specifications that differentiates it from other protocols.
1.应用广泛
2.操作简便
3.传输速度较快
4.传输距离适中