i think this is an attractive wind generator. It comes with everything you need to harness wind power. I like to see the green light come on to denote power being produced and recharging my battery banks. To upgrade the original wind controller, I went on Amazon and found a nice MPPT wind generator. with a big "dump load." With the upgraded wind (hybrid) controller MPPT/60A, the clear display unit showed battery DCV, amps -watts generated by the PV and/or Wind Generator; and adjust parameter if needed. It was easy to assemble the wind generator (tools provided). To install /erect it was little more challenging. What ever you attached it to or erect it on to, make sure it's STURDY (braced). According to my Amazon bought anemometer, the max wind speed was 30 mph. Thank you Amazon for all your ongoing great products and cost saving. Go Green!