免電池自發電無線門鈴 無線門鐘 防水 免電池 免拉線 多鈴聲 遠距離無線傳輸 (1發射器及1接收器) 白色 （包裝隨機）

Brand: Lumitusi
Manufactured Country: China
SKU Short Description (Eng): Origin: China<br/>Battery-free self-generating wireless doorbell<br/>Press to generate electricity, no batteries required<br/>38 kinds of ringtones, four-level volume adjustment, strong signal, good wall penetration<br/>Outdoor waterproof, quick installation<br/>Doorbell The button cannot be placed on the iron door because it has strong signal interference ability, which will render the doorbell ineffective<br/>Specifications: 1 transmitter and 1 receiver<br />​