Display device is 4-digit yang red digital tube
Digital tube 8-level grayscale adjustable
Working Voltage: 3.3V / 5v DC
Working Current: 30 / 80MA
LED Display: 0.36 inche
Color: red highlights
The driver IC is TM1637, only two signal lines can make MCU control four Digit 8-segment LED.
Pinout: LED Display module to Arduino
GND—ground (GND)
VCC--power supply (5V)
DIO--data input and output (D2)
CLK--clock signal pin (D3)
Package Includes:
5 X TM1637 4 bits digital LED display module
1 x Female to male jumper wire