Gemas RANGER - Stopping the Pump; Starting the Pump

Recover factory default settings
The motor can be reset to the state of factory delivery by
pressing the "SET" button for at least 15 seconds. The three lights
of the fixed speeds and the power light turn on.
The motor starts to run by the default preset speed after the
"SET" button is released.
Power saving mode
The LED display turns off in three minutes when there is no action
detected either from the press buttons or from the external
switches.