Nicols BIRDY XS Notice D'utilisation page 11

MAIN FUNCTIONS
Turn on the unit, press MENU button into menu mode, press UP and DOWN button until the required function is shown on the monitor.
Select the function by ENTER button. Use UP and DOWN button to choose the submenu, press the ENTER button to store and
automatically return to the last menu. Press MENU button or let the unit idle one minute to exit menu mode.
In the event of disconnecting with mains power, press UP button for one minute to enter into menu mode. Press MENU button or let the
unit idle one minute to exit.