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"HIGH RELIABILITY, LOW COST, STACKABLE POWER SUPPLY FOR SECURITY SYSTEMS" (SECURITAC)
Date du début: 1 nov. 2008, Date de fin: 30 avr. 2011,
"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 ...
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