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The European market for lightning data has providers from both the public and private sectors. In a few countries (Denmark, Finland, Portugal, Romania, Spain, Sweden, UK) the National Meteorological Services (MET) can provide lightning detection data. In most cases this is because of the incidence of forest fires or aviation. In countries where the METs don’t collect lightning data, METs buy this ...

"Security systems (including fire, intrusion, access control, and voice alarm) typically contain an AC-DC power supply to deliver power to the system and to charge and maintain 12V batteries, which provide the “secondary source” during a mains failure. The combined power supply-charger-battery system represents a key component of such systems in terms of cost and contribution to system reliability ...