The Jebao Doser 2.4 is a newly innovated WIFI smart, and affordable dosing pump with 4 dosing heads. Each pump can be programmed to come on up to 24 times a day and dispense a precise amount of solution, which allows a user to keep their tank parameters stable, and removes the need for mixing supplements daily. The controller is easy to use and advanced, and each pump can be programmed individually. The Doser 2.4 is perfect for any tank, as it allows for dosing in both large and small increments. The Doser 2.4 comes with a power supply and is plug and play after it is calibrated with a 100mL graduated cylinder. Package includes Jebao Doser 2.4 Dosing pump x1, power adapter x 1, Manul x 1