Description0.56″ 4Digit 7Segment Clock Module With RTC & TemperatureFeatures:based on MAX7219 display driverSPI interface (3 pins)operates at 5V supplyindividual control of all digits and decimal pointsdisplay brightness control through softwaredimensions 1.95″ x 1.4″ (50mm x 36mm)0.56″ LED displayThis serial LED display module allows you to interface a 4-digit 7-segment LED display with only three I/O pins of a micro controller, and gives you full control of all digits and decimal points.
