Display size: 4.2 inches

Label size: 104x98x14mm (length x width x thickness)

Display technology: e-ink electronic paper color display technology

Display color: black and white red/black and white yellow

Refresh frequency: the whole store is refreshed (within 30000 pieces) within 30 minutes

Transmission technology: wireless 433MHz, anti-mobile phone, WiFi device interference

Wireless distance: 30-50 meters

Working temperature: normal temperature 0-40 ℃, low temperature - 25 ℃ - 15 ℃

Protection requirements: waterproof and antifreezing, and protective sleeve can be added for special requirements

Communication interaction: two-way communication, real-time interaction

Battery life: can be used for 5 years, and can be replaced directly on site