Unverified85% confidenceCautionTime unknown
租房或门口无预埋电源线的不要买有线供电门铃，需要接18-24V变压器改电路，且退租需复原；应选可充电电池款或粘贴/门缝挂式安装
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85%
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Unverified租房且租期短、无法改造门口线路时，不建议买需接入变压器的有线门铃，应选电池或磁吸/胶贴免钻孔安装的电池款88% similarUnverified无门铃线的老房子选电池款(可拆卸充电电池)，避免布线；已有传统门铃变压器(8-24V AC)的选有线款，永不断电且能常开录制。租房强烈建议电池免打孔款88% similarUnverified租房或短期居住不建议买需要打孔布线的插电款门铃，应选电池款（可拆卸重复安装）或3M胶粘贴款；同时要确认原有机械门铃变压器电压（多为16-24V AC），电压不足会导致插电款反复重启88% similarUnverified租房或门口无预留电源线时选电池/太阳能供电+磁吸支架的免打孔款，可粘贴安装且搬家能带走，不要选需要拆原门铃接线的有线门铃机88% similarUnverified采用220V接线供电，需要预留电线或改线，不适合租房或不方便走线的场景，无法像电池/USB款那样随贴随用87% similar
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