2021DIN EN 50131-1:2021 Alarm systems - Intrusion and hold-up systems - Part 1: System requirements; German version EN 50131-1:2006 + A1:2009 + A2:2017 + A3:2020
0000 DIN EN 50131-1/A3:2019
2010DIN EN 50131-1:2010 Alarm systems - Intrusion and hold-up systems - Part 1: System requirements; German version EN 50131-1:2006 + A1:2009
2007DIN EN 50131-1:2007 Alarm systems - Intrusion and hold-up systems - Part 1: System requirements; German version EN 50131-1:2006