Hi ,
Yes you can use R201 in repester mode as Wifi extender . Please follow steps as given in this article . https://community.cambiumnetworks.com/t5/cnPilot-R-Series-Home-Small/Configuring-cnPilot-R201-R200-as-Range-Extender-Wi-Fi-Repeater/td-p/54900
Regards,
Nilesh