DIN EN 50491-2:2011 家用和建筑物电子系统(HBES)及建筑物自动控制系统(BACS)的一般要求.第2部分:环境条件;德文版本EN 50491-2-2010
General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 2: Environmental conditions; German version EN 50491-2:2010