Can you find out what difference between our continue and alice? We designed four holes on the controller box. This is the bottom of our frame. Here we put our controller inside. Can you see four holes here? We use four screws to fix the controller on frame just like this. If put controller on frame, it’s easy to lose heat, extend the controller life now let’s measure the size of broom box. You can see our lens is 20 cm for this size we can put 25 ampere controller compared with others compared with other size.