The product is supplied with two internal pumps and two built-in buttons used to operate separate pumps. Backlit buttons inform you about operation of a specific pump.

 

The set has two tips for sucking water out of a single beaker (one-channel tip) or four pipettes at a time (four-channel tip). Water is carried from both channels to the beaker through one tube.

 

The power is provided to the pump through a USB A in the weighing terminal. You can supply power from the phone charger, for instance.