The Zebra ZT411 is an industrial thermal-transfer label printer built for demanding, high-volume label printing. This particular configuration is a 4-inch, 300dpi model with an on-metal RFID variant and includes Serial, USB, 10/100 Ethernet, Bluetooth 4.1/MFi and USB Host connectivity — the finer 300dpi resolution suits small, dense labels while on-metal RFID encoding is specifically for tags designed to survive being applied directly to metal assets, which normally interferes with RFID readability. This makes it well suited to asset-tracking programmes tagging metal equipment, tools or infrastructure, in addition to general warehouse and manufacturing label printing.