






Attributes
E-INKDisplay Type
Wi-Finetwork communiction
300PPIresolution ratio
4.2"display size
ABS+PCMaterial
EnglishSupporting Language
display color:4 GRAY
place of origin:Guangdong, China
model number:4.2 inch e ink screen
Size:NFC 3.5/4.2//5.8/7.5 inch
Screen color:Black/ White / Red/Yellow
Material:ABS+PC
Screen display mode:Electronic paper dot matrix
Operating voltage:3.1-3.3V
Battery life:3 to 5 years
Communication protocol:WIFI/NFC/Ble 5.0
Operating temperature:0°C-40°C
Battery Life:5-7years
waterproof:IP65IP67(optional)


