Four Digit - Seven Segment Display - Red

It has four digits and a decimal point on each digit, designed for numeric output, so you can use it to add a clock, timer or counter into your next project.

These displays are multiplexed, common-cathode. What that means it that you can use a 74HC595 or just 8 microcontroller pins if you can spare them to control the 8 anodes (7-seg decimal) at about ~15mA each, and then connect NPN transistors or a TPIC6B595 to the cathodes to sink the 8*20mA = ~120mA maximum per digit.

This is an ultra bright RED colour.

Specifications

• 100mcd
• 14.2mm (0.56") digit height
• Color: red (630nm)
• Common cathode display
• Maximum power dissipation per segment: 66mW
• Maximum pulse peak forward current per segment (1/10th duty cycle, 0.1ms pulse width): 100mA
• Maximum forward current per segment: 20mA
• Maximum reverse voltage: 5V
• Maximum reverse current: 20µA
• Typical forward voltage: 2.1V at 20mA
• Maximum forward voltage: 2.5V at 20mA
• Operating temperature range: -30°C - 70°C
• Typical luminous intensity: 20mcd

• https://circuitdigest.com/microcontroller-projects/raspberry-pi-7-segment-display-tutorial
• https://raspi.tv/2015/how-to-drive-a-7-segment-display-directly-on-raspberry-pi-in-python