UL 873 CRD-2014 温度指示和调节设备的UL安全标准. 节/段落参考: 74.2, 74.4主题: 澄清用于警告标志的文本高度 (第十二版: 2007年11月16日)
UL Standard for Safety Temperature-Indicating and-Regulating Equipment - Section / Paragraph Reference: 74.2, 74.4 Subject: Clarification of text height for Cautionary Markings (Edition 12: November 16, 2007)