Great bit of gear, just upgraded my 20a kickass controler to the 40a kickass controler, its very easy to install even if it's your first build with a solar setup, the display is easy to understand and will give you more than enough information of how your solar setup is performing, has great protection features built into it aswell to keep everything safe from power surge, shipping is fast reasonable and on time, customer service is very good and they have good knowledge of the products they sell.