Complex sentence: Sending an email is an example of one-way communication, and another example are fieldbus sensors, such as most CAN bus sensors, which periodically and autonomously send out their data, whether or not any other devices on the bus are listening for it.
Split into simpler sentences: Sending an email is an example of one-way communication. Many fieldbus sensors, such as most CAN bus sensors, periodically and autonomously send out their data, whether or not any other devices on the bus are listening for it.