The unit supports both DIN rail and surface mounting options. If the unit is permanently mounted to a vertical surface without a DIN rail, you need screws to mount the unit. The specific screw types depend upon the surface to which the unit is mounted. The screw holes on the VRF Smart Gateway can accommodate M3.5 and #6 screws.
To configure the VRF Smart Gateway using the gateway's Wi-Fi access point, you need a mobile device (tablet or smartphone) or computer (laptop or desktop) that supports Wi-Fi.