The utility model is connected with multi household extension downstairs with a host, the host control board directly to the corresponding household extension call signal, the corresponding extension in the household after receiving the signal can also be issued in response to the trigger signal host sounder. If no one presses the button, the host has no trigger signal.
【技術實現步驟摘要】
【國外來華專利技術】
【技術保護點】
【技術特征摘要】
【國外來華專利技術】
【專利技術屬性】
技術研發人員:于家申,游乃亮,
申請(專利權)人:于家申,游乃亮,
類型:實用新型
國別省市:41[中國|河南]
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