The exclusive EasySolar System Control Panel has all the components used to control your drainback hot water system all preassembled and ready-to-go. It contains a 10 gallon drainback tank (with integral heat exchanger), pump, differential controller and gauges. All parts are mounted on a plywood backing board which is ready to mount on the wall.  Just connect the collector panels and tank and make hot water! For use with T-80 or T-120 storage tanks .