Silvercrest SPB 5.2 A1 - Manual (Page 9)

SilverCrest SPB 5.2 A1
English - 7
range is 5°C to 45°C; the maximum relative humidity level is 85%. If you use
the device inside a car, in particular, behind the windscreen, please be aware
that temperatures can clearly exceed +45°C.
DANGER! Please make sure that
 the device is not exposed to direct sources of heat (for example, heaters).
 the device is not exposed to strong artificial light.
 contact with splashing and dripping water and aggressive liquids is avoided,
and the device is not operated in the vicinity of water. In particular, the
device must never be immersed (do not place any objects filled with liquids,
for example vases or drinks, on or near the device).
 the device is not placed close to magnetic fields (for example,
loudspeakers).
 naked flames (for example, burning candles) are not placed on or near the
device.
 no foreign bodies penetrate into the device.
 the output of the Power Bank is never connected with the input.
 the device is not exposed to excessive temperature fluctuations, as otherwise
condensation can occur and lead to electrical short circuits; if, however, the
device has been exposed to large temperature fluctuations, wait
approximately two hours until the device has reached ambient temperature
before starting it up.