4.2 inch ESL system for frozen environment
communication frequency: Wireless 2.4G
Screen effective display area size: 84.8mm (H)×63.6mm(V)
Outline size: 99.16mm (H)×89.16mm(V)×12.3mm(D)
Communication Distance: Within 30m (open distance: 50m)
E-paper screen display color: Black/ white/ red
Battery: CR2450*3
Battery Life : 5 years
Operating Temperature 0~40℃
Waterproof Grade: IP67