Technoline WT 475 Guide D'utilisation page 14

The "°C" icon is the default setting.
In temperature display mode, press the DOWN button once to
change between °C and °F as temperature measuring units. The
temperature icons and values will change accordingly.
In temperature display mode, press and hold the MODE button for
2 seconds to change into combined display mode and a signal tone
is sounding. In this mode, the clock automatically alternates
between viewing time display mode for 10 seconds and
temperature display mode for 5 seconds.
Press and hold the MODE button for 2 seconds again during the 5
seconds of viewing the temperature display to change into normal
time display mode. A signal tone is sounding again.
BACKLIGHT LED
When first powered, the clock will light on the display LED and a
signal tone will sound. The LED of the display will stay lighted as it
is powered by using the adapter.
When powered by batteries only, the display LED will only light up
shortly while using the buttons on the clock. Press the
button once to activate the backlight of LED for 5 seconds.
DIMMER FUNCTION
Press the UP button once to adjust the brightness level of the
display. Two brightness levels (high and low) are available with
high brightness level being the default setting.
NIGHT MODE FUNCTION
1. In time display mode, press the MODE button twice to enter
night mode display.
EN5
SNZ/LIGHT