8-Bit Digital LED Tube 8-Bit TM1638 Key Display Module For AVR Arduino USA

Features: 100% brand new in factory packaging 8 keys, 8 LEDs, common cathode LED digital tube. TM1638 Chip Only requires 3 x IO ports for operation. Read the relevant register to send display data or test button so it saves the MCU resources effectively. Keys are sensitive Effective display. Specifications: Voltage range: DC5.0 V-12.0 V Temperature range: -10 - 70C Expect life: 50000 hours Material: Glass fiber reinforced plastic PCB Color: Blue as picture show   Package included: 1 x 8-Bit Digital LED Tube 8-Bit TM1638 Key Display Module