The ChenMing YD511DS Numeric Keyboard is a programmable device with 15 keys that can be customized for specific display prompts. It features a 2*16 LCD display and RS232 serial interface which outputs ASCII strings. It is suitable for a variety of applications in retail and services. Made in China, this keyboard offers versatility and reliability for businesses and industrial settings. US based free tech support can help you on your application. Firmware can be customized for a small fee, or free if ordered more than 10 units.