4-digit LED display module, red highlights, with adjustable LED brightness and clock point, can display decimals, letters, etc.
The driver IC is TM1637, compatible with Arduino.
The digital display tube can be controlled with only two signal lines, simple and easy to use.
Control interface: a total of 4 pins (GND, VCC, DIO, CLK), GND to ground, VCC for the power supply, DIO for the data input and output pins, CLK for the clock signal pin.
4 M2 screw holes, easy to install, locate and combine modules.