UL 2044 Ed. 3 标准详情
- 标准号:UL 2044 Ed. 3
- 中文标题:商用闭路电视设备
- 英文标题:Commercial Closed-circuit Television Equipment
- 标准类别:美国保险商实验室UL
- 发布日期:
Describes closed-circuit television equipment that- a) Are intended for commercial use on supply circuits as defined in the National Electrical Code, NFPA 70; and b) Receive their signals from a video-recorded medium or image-producing devices in a c
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