UL 464 Ed. 8 标准详情
- 标准号:UL 464 Ed. 8
- 中文标题:
- 英文标题:Audible Signal Appliances
- 标准类别:美国保险商实验室UL
- 发布日期:
Outlining electrically and electronically operated bells, buzzers, horns, and similar appliances, rated 300 volts max for general or fire-protective signalling service and intended for indoor or outdoor locations or both in accordance with the Standa
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