Specification: Origin: Mainland China Type: Module Condition: New TM1637 Voltage: 3.3-5.5V Maximum current (5.5V): 80mA Display: four-digit digital tube Brightness: adjustable Driver chip: TM1637 Size: 42*24*12MM TM1638 8 buttons 8 LEDs 8-bit digital tube Driver chip: TM1638 Rated voltage: 5V Display: eight-digit digital tube Size: 76*50*12MM MAX7219 Rated voltage: 5V Display: eight-digit digital tube Pin spacing: 2.54MM Driver chip: MAX7219MM Size: 82*15*12MM 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 Digital LED Display Module 1. Simple Interface and Easy Connectivity: Digital led display module Can be easily connected to microcontrollers or other main control devices, thanks to its simple interface and driver options. 2. Serial Pin Communication Protocol: LED segment display module requires only a few pins to control and display digits, making it ideal for beginners and rapid prototyping. 3. Integrated Controller and Driver: LED display digital tube Includes functions such as control and display mode selection, simplifying circuit design and layout while reducing the number and complexity of external components. 4. Low Power Design with Adjustable Brightness: LED display digital tube supports multi-level brightness adjustment, allowing for clear visibility while conserving power. It can adapt to ambient lighting conditions and user preferences. 5. Wide Range of Applications: LED digital tube widely used in various devices such as timers, counters, thermometers, electronic clocks, and other digital display devices.