VFD Tube (Arduino Compatible)/ Combined Antiquated Electronics With Modern Technology, The VFD Tube Module Is Developed As Independent Blocks DC supply voltage: 5V/Power supply current: 200mA per module Classic, out of production, VFD tube, module IV-22 Serial Expansibility/RGB background LED/Integrated boosted circuit Logical driven by Serialin Parallel-out controller 74HC595/Extra 5V DC out for controller board Open source library & sample code available/Goldplated PCB/Size: 50x35x40mm (1.97x1.381.57")