Features EASY CONNECTION: Our six digit digital display module only requires four wires to connect, making it quick and effortless to set up. REDUCED IO PORTS: This module takes up only two IO ports on the microcontroller, saving valuable IO resources for other functions or components. ADJUSTABLE EIGHT LEVEL GRAY SCALE: The display module allows for fine tuning of the eight level gray scale by modifying the values in the register, providing flexibility in displaying different shades or strength of brightness. CPU LOAD REDUCTION: Unlike traditional dynamic scanning methods that require continuous scanning by the MCU's main program, our module eliminates the need for dynamic scanning, significantly reducing the CPU load on the microcontroller. CONVENIENT INTERFACE COMPATIBILITY: Our module can easily connect and communicate with various MCU control boards for seamless display and adjustment of parameters. It provides compatibility and versatility for a wide range of applications and projects. Spec: Item Type: 6 Digit Digital Tube Display Module Material: PCB Digital Tube Size: Approx. 0.36 inches Driver Chip: TM1637 Voltage: DC 3.3V-5V Current: 30mA Lifespan: ≥50,000 hours Driving Mode: for I2C Protocol Working Temperature: -40℃ to 85℃ How to Use: Used for counters, timers, frequency meters, stopwatches, voltage and current displays, etc. It can also be used with our relay control board to display time and adjust parameters. packing list: 1 x Module Package List 1 x Module