Magicfly Brand New MC-03-M Dosing Peristaltic Metering Pump Triple for Aquarium Lab Reef, Automatically micro-computer control/Interactive interface parameter settings Pump is supplied a long life Santoprene hose Use Calibration system, to Calibrate pumps, more accurate Can manage up to 6 channel of expansion/pump can be set start and stop time separately can store the program data in the memery, even lost power supply