Hi @felmue . Thanks for the reply. I think I got the solution the same time you sent me yours. I did use the code in here as below: I did an 'Execute' Block: import ubinascii import network wlan_sta = network.WLAN(network.STA_IF) wlan_sta.active(True) wlan_mac = wlan_sta.config('mac') wlan_mac=ubinascii.hexlify(wlan_mac).decode().upper() [image: 1682625962466-76e881c1-37df-4e5b-94f1-c33c0da572aa-image.png] then a Label Block: wlan_mac [image: 1682626003960-147bf674-2e3a-4ea5-84fc-41c072d1ce42-image.png] Anyway, thanks for taking the time and effort to reply. Rami