The Zebra ZT231 is an industrial-grade thermal transfer and direct thermal label printer aimed at warehouses, manufacturing lines and distribution centres that print barcode, shipping and product labels in volume. This configuration is the 4-inch print-width model at 300 dpi resolution, giving sharper small-barcode and text detail than a standard 203 dpi unit — useful for asset tags, compliance labels or dense data barcodes. It has a tear-off dispense mode, EU/UK power cords, and a broad connectivity set: USB, serial, wired Ethernet, Bluetooth LE, a USB host port for peripherals like scanners or keyboards, and 802.11 wireless networking. That combination makes it suitable for both a fixed desk/production-line install and integration into an existing wireless warehouse network, not a casual office label printer.