Motorized Pool Roller attaches to 20 FT pool reels with simple Installation in few minutes. Click the link above "Visit the Solar-Lakes store" to see different models and to watch videos about the product assambly. No Wiring, Grid independent, Solar-battery-powered Smart Technology, click-of-button simple operation. WARNING: this is a very powerful product, watch the product demonstration video ! INCLUDED: the complete motorized unit, AC/DC battery charger (though it is not required for the normal daily operation of this solar powered product), standard motor shaft adapter. NOT INCLUDED: The 20' aluminum tube is not included. If you do not have a manual roller already, you can purchase the required roller tube through the link above "Visit the Solar-Lakes store" ; the blue solar blanket is not included. Thanks to this advanced and environmentally conscious technology there comes an additional benefit: maximal consumer safety with no risk for electrocution by this grid-independent solar-charged battery powered product that rolls up your ¼” thick solar blanket from your pool in one minute. The Motorized Pool Roller attaches to compatible 20 FT pool reels with simple installation in few minutes. Click the link above "Visit the Solar-Lakes store" to see different models and to watch videos about the product assambly. No Wiring, Grid independent, Solar-battery-powered Smart Technology, click-of-button simple operation. WARNING: this is a very powerful product, watch the product demonstration video ! INCLUDED: the complete motorized unit, AC/DC battery charger (though it is not required for the normal daily operation of this solar powered product), standard motor shaft adapter. NOT INCLUDED: The 20' aluminum tube is not included. If you do not have a manual roller already, you can purchase the required roller tube through the link above "Visit the Solar-Lakes store" ; the blue solar blanket is not included. Thanks to this advanced and environmentally conscious technology there comes an additional benefit: maximal consumer safety with no risk for electrocution by this grid-independent solar-charged battery powered product that rolls up your ¼” thick solar blanket from your pool in one minute.