Silvercrest SSR 10 A1 - Manual (Page 58)

SilverCrest SSR 10 A1
56 - English
Batteries
Always ensure correct polarity of the batteries. Please note the
markings on the batteries and in the battery compartment. Never
try to recharge batteries and never throw them into an open fire.
Never use different batteries (old and new, alkaline and carbon,
etc.) at the same time. Remove the batteries if you will not be
using the device for an extended period of time. In the event of
improper use, there is a risk of explosion and leakage. Batteries
are not toys. Consult a doctor immediately if someone swallows
batteries. Batteries must not be dented or opened as leaking
chemicals can cause injuries. In the event of skin or eye contact
with chemicals, they must be immediately rinsed with generous
amounts of water and a doctor must be consulted.
Ensure that
 no direct heat sources (e.g. heating) can affect the device;
 no direct sunlight or bright artificial light reaches the device;
 any contact with splashed and dripping water and corrosive
liquids is avoided and the device is not operated in the vicinity
of water. In particular, the device should never be submerged
in liquid (do not place any items filled with liquid, e.g. vases or
drinks, on or near the device);
 the device is not in the immediate vicinity of magnetic fields
(e.g. loudspeakers);