This 4 pump unit will not work alone, you need to order the 3 pump version.  The 4 pump version is an add on and there is no built in controller.  Only the 3 pump version has the built in controller.

BM technical engineer, after a study which lasted a year and a half, using a micro-computer technology and launched a micro-computer technology, mechanical and electrical integration titration pump. The titration of marine biological pump is mainly used for home-cylinder timing, quantitative, and accurate to add marine organisms need to grow a variety of elements, such as calcium, magnesium, kh enhancing agents, trace elements and so on. Added through automation, without the need for staff to add a variety of solutions trouble, avoiding the added result of manpower caused in the course of the leakage increases, add the amount of excessive or inadequate mistakes. The titration pump can automatically calculate the average distribution of several auto-titration capacity, reduce the time to add the same element result in a large number of biological impact (up to 24 times a day can be set), and has automatic time-sharing between channels to add, eliminate all add liquid due to the same time, adding the chemical interference with each other. The pump provides a three titration titration channels (which can be easily extended to seven channels, up to 11 channels, extending models BM-T02). The titration pump uses well-known American Microchip micro-computer chip with built-in storage memory set procedures and there is power failure the clock to maintain function. Burette adopted the American Medical exclusive longevity of high-quality rubber hose, with an average service life of up to 10,000 hours, using 5 high torque motor longevity quiet motor, pump shell with automotive instrument-level high-strength self-lubricating plastic POM. Titration PC pump control panel with fully waterproof design, touch-type LCD backlit display control panel provides a simple and convenient, clear and intuitive, "man-machine dialogue" operational control. 
 

Comes standard with a 360-degree rotating switching power converter, so that small space to provide further convenience outlet, and comes with a dedicated infusion tube, reflects the company's long-established BM "people-oriented" equipment design. 
 

We also pump design for the titration series of accessories: Titration pump special bracket, hang-cylinder-type buret fixation, storage liquid barrels, acrylic mixed stirring rod and so on, there is a need friends can according to their actual usage, to be purchase. ** We will also introduce the recent special pump-specific elements of the supply of titration to add powder series products, the product according to the proportion of natural seawater composite of the SPS needed for growth, strontium, molybdenum, iodine, potassium and other important element in the growth of life. Can be very convenient to add the maintenance of water quality, reducing red tape, add a variety of elements of the workload.

Automatically micro-computer control
Can add the designated Quantity of element auotmatically wiht different time-sectgion 
interactive interface parameter settings 
Can manage up to 11 channel of expansion function 
Long-Lasting , during and pharmacy recommend dosing tube

Size : 23.5 x 16 x7cm
Accuary +- 5%
Voltage :AC100-240V 50/60Hz 0.36A DC12V 1A (US Pin)
4M Dosing Tube include
Dosing Pump Bracket and BM Bracket Holder for BM-T02 Dosing Pump Are Sold Separately.
Flow :1 - 1999ML
Cycle : Max :24 cycle per day