Attributes
EINKType
2.9 inch e inkDisplay Size
Guangdong, ChinaPlace of Origin
2.9 inch e inkScreen Size
NFC 2.13/2.66/2.9/4.2/7.5 inchSize
Black, white and abistableScreen color
Display screen:Full graphic e-ink screen
appearance:Black/white/red/yellow
Operating voltage:3.1-3.3V
Battery life:3 to 5 years
Communication protocol:0°-40°C
Operating temperature:Zigbee/ Private Protocol (encryption) or Bluetooth v4.2
waterproofing grade:0°C-40°C
Wireless communication:Private protocol
