We build the Craft Brew Pro 4000 Reverse Osmosis System in 8 different variations. It can be ordered in 120 V, 220 V pressure switch controlled or float switch controlled. The 4000 comes with all the options you come to expect with a Craft Brew Water reverse osmosis system. The system comes pre-plumbed and prewired for an anti-scalant system, UV and stainless steel pump to name a few. On top of all this, will ship it to you free (some restrictions do apply). If you have a question on which system is right for you, please give us a call at 805-777-7037.