The HNA-09SS91 is a Vacuum Fluorescent Display (VFD) module manufactured by PUFENG. It has a dimension of 75x20.5x6.5 millimeters, and is compliant with the European Union’s RoHS (Restriction of Hazardous Substances) directive. The HNA-09SS91 is a monochrome device that supports single character, alphanumeric, and graphic symbols. It is suitable for applications requiring a highly visible display. It features an operating temperature range from 0° to 70° Celsius, and a storage temperature range from -40° to 80° Celsius. This module can be connected to various control systems, thanks to its various peripheral options such as TTL or serial interface.