Datasheet

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How far away from my phone can I have my Bluefruit LE module?

This depends on a number of factors beyond the module itself such as antenna orientation, the antenna design on

the phone, transmit power on the sending node, competing traffic in the same 2.4GHz bandwidth, obstacles

between end points, etc.

It could be as low as a couple meters up to about 10 meters line of sight, but generally Bluetooth Low Energy is

designed for very short range and will work best in the 5-6 meter or less range for reliable communication, assuming

normal Bluefruit firmware settings.