Specification: Origin: Mainland China Type: Voltage Regulator Condition: New Model Number: LED Digital Tube This is the basic 4-digit 7-segment display module. The display shows the decimal point of each digit. The module is connected to the digital I / O via 2 pins. Library used: TM1637.h Digital tube: 0.56 inch Driver IC: TM1637 Color: White/Red/Yellow/Green/Blue (optional) Operating voltage: 5V Product size: 66*28*10mm/2.6*1.1*0.4in Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Tube Clock Module 1. Simple & functional: This digital display module features a simple design and is easy to use with any microcontroller that supports the TM1637 library, making it ideal for beginners and hobbyists alike. 2. 4-digit 7-segment display: The digital tube includes a 4-digit 7-segment display, with each digit featuring a decimal point for added functionality. 3. Two-wire interface: The tube clock module uses a two-wire interface to connect to your microcontroller's digital I/O pins, making it easy to integrate into your projects. 4. High-quality components: The display time clock indicator features a high-quality 0.56-inch LED display and a reliable TM1637 driver IC, ensuring accurate and stable display performance. 5. Satisfaction Guarantee: We strive to provide each customer with the highest standard of customer service to ensure you have a pleasant shopping experience. If you have any issues, inquiries or need assistance, please feel free to contact us directly.