Epson 4ZE21AA, Thermal, POS printer, 350 mm/sec, 53 - 75 µm, Wired, WEP, WPA, WPA2 Epson 4ZE21AA. Print technology: Thermal, Type: POS printer, Print speed: 350 mm/sec. Printing media thickness: 53 - 75 µm. Connectivity technology: Wired. Security algorithms: WEP, WPA, WPA2. Built-in barcodes: AZTECCODE, CODABAR (NW-7), Code 39, Code 93, Data Matrix, EAN13, EAN8, GS1 DataBar, ITF, MaxiCode,..., Mean time between failures (MTBF): 360000 h, Autocutter durability: 3 million cuts