MAX7219 is a common-cathode display driver with integrated serial input and output that links your microprocessor to a 7-segment digital LED display with 8 digits of 0.36 inches in size. This eight-digit display is driven by only three signal wires and a 5-volt power source. The MAX7219 supports both flicker-free and cascading displays to expand the number of display digits. The brightness of seven segments may be adjusted to 16 levels, making it simple to use. The whole equipment includes A 150 ?A low current consumption closed mode, analog, and digital brightness control.
Specifications :

• Product - Digital Display Control Module 
• Controller IC - MAX7219
• Operating Voltage - 5V DC
• Operating Current - 330mA
• Interface Protocol - SPI
• Size - 82 x 15 x 11mm

Features :

• 100% Brand new and high quality
• MAX7219 digital display control module
• This module is compatible with 5V and 3.3V microcontrollers.
• You  can use it for Arduino
• Only three IO ports are used to drive the eight-digit display. MAX7219 supports flicker-free displays as well as cascading displays.

Package Include :

1 x MAX7219 8 Digit Led Tube Display Control Module