# iw dev > Show and manipulate wireless devices. > For a list of channels, frequencies and reg information: . > More information: . - Set device to monitor mode (interface must be down first. See also `ip link`): `sudo iw dev {{wlp}} set type monitor` - Set device to managed mode (interface must be down first): `sudo iw dev {{wlp}} set type managed` - Set device WiFi channel (device must first be in monitor mode with the interface up): `sudo iw dev {{wlp}} set channel {{channel_number}}` - Set device WiFi frequency in Mhz (device must first be in monitor mode with the interface up): `sudo iw dev {{wlp}} set freq {{freq_in_mhz}}` - Show all known station info: `iw dev {{wlp}} station dump` - Create a virtual interface in monitor mode with a specific MAC address: `sudo iw dev {{wlp}} interface add "{{vif_name}}" type monitor addr {{12:34:56:aa:bb:cc}}` - Delete virtual interface: `sudo iw dev "{{vif_name}}" del`