Directly installed in the water supply line, the Dosatron operates by using water pressure as the power source (no electricity needed). The water activates the Dosatron, which takes up the required percentage of concentrate. Inside the Dosatron, the concentrate is mixed with the water. The water pressure forces the solution downstream. Operating pressure range is 2.2 to 116 PSI and water flow range is 2.2 to 40 GPM. Injection capabilities of 1:3000 to 1:800 (0.03 to 0.125%). Includes mounting bracket, suction hose, bypass, union, weighted strainer, and quick start guide.