In any wireless design, the topic of range, or the distance a connection (or link) can extend, will likely come up. As mentioned previously, Bluetooth® devices have a typical range of 10 m, but can extend up to 100 m. To understand the concept of range, there are two parameters that are important, transmitter power and receiver sensitivity. Transmitter power is best described as, how loud can a person yell? Here, the louder the better, as that will help the voice travel farther. This is measured in dBm, as is seen in a number like +10 dBm for a Bluetooth transmitter output. Receiver sensitivity on the other hand, is how well can a person hear, or what is the quietest sound one can detect? In this instance, the lower the better. This is also represented in dBm, but since lower is better, the parameter will be negative. For a Bluetooth device, a number like -93 dBm may be seen as a receiver specification.