Feature
1. COB with metal frame
2. 5x7 dots with cursor
3. Built-in controller KS0066 or equivalent
4. + 5V single power supply
5. 1/16 duty cycle
6. LED B/L pins:A/K, or1/2,or 15/16.
7. Option: LED,(4.2V)
8. Option: +3V single power supply
9. Option: external negative voltage