UNE-EN 50244:2018 Electrical apparatus for the detection of combustible gases in domestic premises - Guide on the selection, installation, use and maintenance
2018UNE-EN 50244:2018 Electrical apparatus for the detection of combustible gases in domestic premises - Guide on the selection, installation, use and maintenance
2001UNE-EN 50244:2001 Electrical apparatus for the detection of combustible gases in domestic premises - Guide on the selection, installation, use and maintenance.