Greetings, My name is Felix de los Santos. I am writting from, Mexico. I am looking for a solar pool controller. I am a solar panel builder. And I need a supplier of such controllers. Can you please give me more information in the control. Minimum order quantity and prices. In particular I am looking for a solar pool controller which can protect my glass vacuum tubes from thermal shock. That is, once a certain high diferential is reached (too much temperature diferenci between pool and collector) it will start to operate in intermitent form. Turning on and off, on and off. Thankyou Show More