NUUO 8000HD SERIES - Manual (Page 10)

Intelligent Surveillance Solution
page - 9
Caution

The electronic components within the unit are sensitive to
damage from Electro-Static Discharge (ESD). Please take
precautions at all times when handling the unit or its
sub-assemblies.
 Proper Surge solution is needed for outdoor application. It
provides protection from damaging transient voltage surges and
spikes.