DIN EN 50543:2011
对探查测量室内环境空气中二氧化碳和/或一氧化碳所用电子便携式和移动式装置的要求和试验方法;德文版本EN 50543:2011 + AC-2011
Electronic portable and transportable apparatus designed to detect and measure carbon dioxide and/or carbon monoxide in indoor ambient air - Requirements and test methods; German version EN 50543:2011 + AC:2011