DIN EN 50491-2:2011 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
2015DIN EN 50491-2:2015 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 + A1:2015
2011DIN EN 50491-2:2011 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