Feature: 1. NEAT WIRING PCB BOARD: 6-digit tube is made of good quality PCB board, has neat wiring and clear board traces 2. QUICK WIRING AND USE: LED segment display module is plug and play, no need for cumbersome wiring process, simple and quick to use 3. 2-PIN CONNECTION: This is a 6-digit 7-segment display module, the display shows each decimal point, the module is connected to digital I O via 2 pins 4. TM1637 DRIVE ROUTINE CONTROLLER: Connection module is 2 pins to digital I O, uses TM1637 controller, voltage is 5V, has stable display 5. STABLE AND DURABLE: 6-digit digital tube comes with stable structure, excellent performance and long service life Specification: Item Type: 6-digit tube Material: PCB board Use: LED digital display Digits: 6-digit 7-segment decimal system Use library: TM1637.h Connection module: 2 pins connect to digital I O Controller IC: 74HC595 Display size: Approx. 46 x 14 mm / 1.81 x 0.55 in Color: Red. Package list: 1 x 6-digit tube 1 x Pin header