Silvercrest DZK 20-A DE 3655 Operation And Safety Notes page 26

Instead of that, there is a random function
during this time period, which alternately
switches on and off with an interval of 10
to 31 minutes.
Activating the random function
Check if the device is in AUTO ON
mode. If not, set to AUTO ON (see
„Setting the operating mode").
Press the RANDOM button
symbol will appear on the LC display
Deactivating the random function
Press the RANDOM button
RND symbol will disappear from the LC
display .
1
. The RND
10
1
. The
10
GB/IE/NI
.
27