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Product Description
1）结构特点：
外壳材料为HT250 铸铁铸造。
2）外形尺寸：
240mm×190mm×110mm
3）功能：
可实现巷道沿线打点和通话。
4）技术参数：
额定输入电压：AC127V，频率：50Hz。
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Address: No. 32, Vocational Education City Road, Yuhua District, Changsha City, Hunan Province
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