The Okdo 0.36 inch common anode TelePort 4-digit 8-segment LED display module with 12 pins and score points. Only two digital pins on the control board can control what the digital display shows and brightness. RJ11 port has four pins(GND, VCC, DIO and CLK). GND is grounded, VCC is power supply, DIO is data input/output pin and CLK is the clock signal pin. Compatible with RJ11 6P6C OKdo TelePort Control boards and expansion shields
Control the 4-digit display using I2C bus including brightness
Ideal to display time, scoring device, counter, and other information