| Display Tech | e-paper, high visibilty, viewing angle 180° |
| Display Colour (3-colour) | black-white-yellow or black-white-red |
| Transmission Speed | one shop (30,000 units), within 30 mins |
| Success rate | 100% |
| Frequency | Sub-G (433 MHz), prevent interference from wi-fi and can penetrate through wall and water |
| Wireless Coverage | 30-50 m |
| Operating Temperature | 5°C to 40°C (normal), -25°C to 15°C (sub-zero) |
| Communication | real-time or 2-way communication |
| Battery Life | 5 years replaceable on-site |
