No, the UniFi Mobile Router Industrial (UMR-Industrial) is primarily designed as an LTE Cat 4 mobile WiFi router and not as a WiFi amplifier or repeater. It does offer WiFi functions, but its main function is to provide Internet access via LTE and not to amplify an existing WiFi signal.

If you only want to boost the existing Wi-Fi signal outdoors, a dedicated Wi-Fi range extender or repeater would be a better choice.