Is a control handle with backlight display. It is connected to a U·valve, U·meter+ or U·count by Bluetooth®. U·vision displays the hose reel (fluid outlet) number, the type of fluid delivered, the battery life and Bluetooth® signal strength, the solenoid valve (open or closed) status, the volume delivered and delivery progress. U·vision is powered with 4 AA 1,5 V alkaline batteries. · Remember, use Uvision by NEXU to save time, fluids and money. VIDEO Youtube: https://youtu.be/14eMeluUqAE Instruction book: 838842.