Brandson 304577 Manuel D'instructions page 51

Caution! The device is pre-calibrated and needs to be recalibrated
only in exceptional cases. Take the help of a qualified technician for
the calibration, if you are not 100% sure of how to do it.
Most of the parameters need not be calibrated except for the relative
air pressure at the installation location where the height above the
sea level has to be setup to take the effect of altitude into account.
Caution!
15. Safety instructions and disclaimer
Never try to open the device to repair or make modifications. Avoid con-
tact with the mains voltage. Do not short-circuit the product.Keep the
device away from high temperatures. Do not expose the device to sudden
changes in temperature or strong vibrations, as this could damage the
electronic components. Check the device for any damage before using
it. The device should not be used if it was subject to impact or has been
damaged in some other manner. Please comply with the local regulations
and restrictions.
Do not use the device for purposes other than those described in the
user manual. This product is not a toy. Keep it out of the reach of children
or mentally disabled persons. Any repair or modification to the device,
which is not carried out by the original supplier, will void any warranty
and guarantee claims. The device should only be used by those who have
read and understood this user manual. The specifications of the device
may be changed without any special prior notification.
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English