Display dimming/turn-off function
With factory settings display screen is quite bright and the light during night could be disturbing for some users. So it is foreseen for user possibility to turn-off the display.
To enable display turn-off function, please press and hold „-“ and „OK“ buttons for 5 sec. until display starts blinking. After 30 sec. display will turn off. Display will be turned on after pressing any of buttons and will turn off after 30 sec. again. This function can be turned off by pressing and holding „-“ and „OK“ buttons combination for 5 sec. until display starts blinking.