Before finding out which is the finest radio connection, it is important to find out how the sensor network works. For a temperature monitoring solution that is GxP compliant, the temperature is first measured by a sensor.
This data is then transmitted through a device known as a bridge and lastly ends up in a software where the data is archived, and the reports can be generated. This procedure can be done in five different ways, with only one using a wire as a communication protocol.
First, both wireless and Bluetooth data loggers use Bluetooth as their communication protocol to generate PDF reports through the sensor network.
Secondly, both proprietary antenna and public antenna wireless monitoring solutions use non-wired communication bridges like signals to send information from the sensor.
Lastly, there is a wired monitoring system that uses a wire to communicate in the sensor network, as the name suggests. Using a proprietary antenna in the 868MHz in the US and 915MHz in the EU is the most commonly used frequency band and setting up a good radio connection starts with this.