What is Bluetooth Module?

A Bluetooth module is a small wireless system that someone has designed, manufactured, and certified by the FCC, IC, CE, ETSI, etc. Modules are typically small PCBA's that include a Bluetooth processor, as well as all other hardware needed to run the device.

Key hardware components for the Bluetooth module includes (but not limited to):

• A Bluetooth SoC including the processor to process the data and using the rules defined by the software and the radio transmitter/ receiver (2.4 GHz) to transmit/receive usable radio waves containing data

• The crystals to control the operation of the system synchronized

• Antenna to receive/transmit radio signal over the air

• Memory Flash/RAM to store the data

• Sensors to collect the raw data such as motion or heartbeat

How does Bluetooth module work?

Bluetooth devices use radio waves to connect mobile phones, computers and other peripherals. Bluetooth products include a small Bluetooth module and Bluetooth radio and software that support connection. When two Bluetooth devices want to communicate with each other, they need to be paired. The communication between Bluetooth devices takes place in a short-range temporary network (called a piconet, which refers to a network connected by devices using Bluetooth technology). This kind of network can accommodate two to eight devices connected. When the network environment is successfully created, one device acts as the master device, and all other devices act as slave devices.

What is the range of a Bluetooth module?

The Bluetooth range can be as little as a few meters to several hundred meters. It depends on many parameters like the output power, the antenna (both transmitter and receiver), the receiver sensitivity, the physical environment (attenuation by walls, trees, people), interference from other devices (e.g. Wi-Fi) and which Bluetooth protocol you use. The latest Bluetooth 5.0 standard supports the long range function.

If you need a Bluetooth module solution provider like RF-star, you can contact us and check more BLE modules on our products page.