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: 15/16, or A/K or 1/2
7. Option: LED B/L
8. Option: +3V single power supply
9. Option: negative voltage (built-in, external)