The pump is equipped with an adjustable electronic level sensor for automatic or manual operation. In the first case, by moving the cursor (in 10 mm steps) to one of the available positions on the “on-automatic scale” it is possible to choose the water level at which the pump is to be started. By shifting the cursor to manual position the pump starts/stops when the plug is inserted/removed from the socket. We recommend you read the instruction manual of the Nova Up Mae (also available in our DNA software) for useful information for use, maintenance and installation.