Introduction
ZT421 is the facelift model from existing ZT420 printer with enhance in term of user interface and user experience when using this printer. The first change is upgraded it Monochrome LCD monitor to interactive touch screen monitor. This 6 inch full colour touch screen display allow users have better understanding on the printer operation and setting changes much easier compared with previous ZT420 model. Indirectly, this helps the setup technician can shorten their installation time and have better alert message to the user just in case any problem happen on the printer. ZT421 come with standard 256MB ram and 512MB flash and built in real time clock chip, this ZT421 now enhanced with QRcode function to allow binding between mobile device make simple between printer and mobile computer. It standard connectivity include Serial, USB, Ethernet, BT 2.1 and you make add on communication include Parallel, 802.11ac/BT 4.1 (dual band), Ethernet, IPV6. Select the printing option from 203 and 300  dpi with tool-less printhead changing. Same as previous ZT420, ZT421 still maintain it maximum ribbon length of 450meter and maximum label media outer diameter at 8 inch.

Feature
Color LCD for a more modern, intuitive user experience
Color coded alerts
Optional dual-band wireless card supports 802.11ac and Bluetooth 4.1,
Bifold door for space efficiency
Energy Star power consumption
Built-in help feature with QR Code
Standard Connectivity Serial, USB, Ethernet, BT 2.1