... applicationThis product is made of fire-retardant materials, with battery protective circuit for progressive constant current charge, ... , overcharge and overdischarge protection. It is provided with non-corrosive nicad battery, which is convenient for ... Automizing Fighting System, Extinguisher, Firefighting Siameme Connection, Firefighting Emergency Light, Manual Fire Alarm) 2009/09/26 --- 2012/09 ...