Block Low signal clients

Hi 

Is there a way to block devices with low signal levels from connecting to an R190 router? 

For example any client device with a signal lower than -78 will be blocked from connecting, or will be kicked off. 

If not can this feature be added?

I think someone asked this question recently and IIRC the cnPilot R series doesn’t have a cut off threshold, but the E series does. The E series has an SnR threshold you can define.