What is the range of the Avantree DG40S / Why the working range of DG40S is not good?

The range is specified at 10 meters or about 32 feet. OPEN SPACE without any walls or floors in the way. If you are not getting that range and there aren't any walls or floors in the way, this is likely a problem of radio interference.

We see this most often if the adapter is connected to the back of a desktop computer, where there is a lot of random radio noise generated by the processor and system parts. Moving the adapter to the front of the computer often helps, as does using a USD2.0 extension cable (like this one) to move the adapter away from the computer. 

Poorly shielded USB 3.0 ports will cause radio interference. If you device is having range issues when plugged into a USB 3.0 port, a USB extension cable can help with this too.

Bluetooth devices communicates on a frequency of 2.45 gigahertz (actually between 2.402 GHz and 2.480 GHZ, to be exact). Devices using the same frequency will cause interference, for example, multiple WiFi access points. WiFi signals are much stronger than Bluetooth. Bluetooth automatically avoids channels that have strong WiFi singles. If all the local channels are dominated by strong WiFi signals, the Bluetooth signal has no place to go. Computer wireless accessories such as mouse/keyboard use the same frequency. That might have effect on adapter range as well. Examples of other devices using the same frequency are baby monitors, newer generation of cordless phones, microwave. 

If your device has range issues and none of above situations apply, please contact us. 

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