311x | TESTED • SUMMARY |

A small internal chip that adds modern smartphone streaming to the classic 1-DIN head unit. Color-Matching Backlight:

A built-in Wi-Fi or Matter-enabled socket that allows for dimming and scheduling via smartphone without needing an external smart plug. USB-C Charging Base: A small internal chip that adds modern smartphone

If you are working with hardware components or industrial sensors: Polaris 4x4 Switch (100-311X) Go to product viewer

Ability to change the button illumination color to match any car's dashboard lighting. Polaris 4x4 Switch (100-311X) Go to product viewer dialog for this item. : A small internal chip that adds modern smartphone

If you are looking at consumer goods like lighting or writing tools: Triple Gourd Table Lamp (Robert Abbey 311X) :

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A spring-loaded mechanism that protects the delicate 0.38mm needle tip when the pen is dropped or clipped to a pocket.