Here are some features about the units.Oh almost forgot the price is up in the 1st post.
Features:
 -  		3 inches LCD Display in blue. Very easy to Use
-  		Has Manual Mode and Timer Mode to operate.
-  		In Manual, you could set a continuous running (not recommended) as well as a custom single shot running. 
-  		In timer mode, every instruction could set its own start time and run time. Very flexible. Max. could dose 16 on / off per day.
-  		Flexible dosing speed, 4-Speed dosing speed adjustable (from  0.075 ml – 0.6 ml / sec.). Could adjust speed in manual mode and timer  mode also. You could even dose in DROPLET.
-  		Set time to control dosing amount, very accurate.
-  		Calibration – Use second to adjust the dose about achieving calibration. Very Easy. 
-  		Each pump has 16 on / off setting and could run independently.  
-  		Dosing Instruction would be stored in RAM. No need to reset every time. 
-  		Dosing status menu, you could see the coming dosing execution info. As well as the temperature in your tank.
-  		With Temperature sensor helps to monitor the tank water temperature. 
-  		Low cost of replacement pump. 
 
 	One Year warranty with PCB and LCD replaceable.