Fixed firefighting systems - Components for sprinkler and water spray systems - Part 4: Water motor alarms (includes Amendment A1:2001); English version of DIN EN 12259-4:2000 + A1:2001
固定消防系统.洒水器和喷水系统的部件.第4部分:水马达报警器(包括修改件A1:2001);德文版EN 12259-4:2000+A1:2001