Description
ZK21SF | 2.13 ″ Screen
Dot Matrix EPD Black/White
– EPD / E-ink Screen
– BLE 5.0 with ultralow-power consumption
– Dimension：72*36.4*14.3mm
– Working Temperature：-25°~25°
– Battery：1200mA / 5 Years
– 2.13″ Dot-matrix E-paper
– Freezer area use, IP67
– LED Indicator – NFC
