Bluetooth is used to transmit voice and data over short distances. In this way, different devices can be wirelessly connected, such as a mobile phone with a headset or a laptop with a printer or a mouse. Bluetooth is also used to monitor patients.
Bluetooth technology is divided into three power classes. Most Bluetooth applications belong to classes II and III and have a very small capacity: class II has a peak capacity of 2.6 mW, class III 1 mW. Class I is stronger (100 mW) and is used in some mobile phones to connect with the internet, for example.
It is not necessary to take precautionary measures when using Bluetooth devices in class II or III. Due to the slight radiation level, it is even advisable to use a headset in order to limit exposure to the radio waves from the mobile phone.
Bluetooth devices can also reduce their radiation levels in case of good reception. This system, called power control, is standard for class I and optional for classes II and III.
You can download all information of this section in its entirety as a PDF document (information sheet “Wireless devices”).