Features WORKING PRINCIPLE: The use of 2 pieces of 595 drive digital tube, need for a single chip computer 3 ways 10 ports, display according to the digital tube dynamic scanning principle STABLE AND DURABLE: LED display module is durable, possess stable performance, and can be reused for a long time SMALL AND PORTABLE: 8 segment digital LED display tube is light weight, possess small size, easy to carry and use APPLICABLE SCENARIO: The LED display module can be used for a mechanical equipment, such as advertising signage, advertising background, control panel, LED matrix display, DIY kit, etc. RELIABLE PCB: Digital tube display module adopt excellent PCB material, with reliability and miniaturization, good maintenance and interchangeability Specification: Item Type: 8 Digit Display Board Material: PCB Wide Operating Voltage: 3.3V to 5V Digital Tube Model: 0.36 4 digit common anode Package List:1 x 8 Digit Display Board1 x Connecting Cable Package List 1 x 8 Digit Display Board 1 x Connecting Cable