Wireless self-generating doorbell dragging a hotel home smart remote digital prompt free shipping |

Wireless self-generating doorbell dragging a hotel home smart home remote digital prompt free shipping

Product name: wireless doorbell Power supply mode: the door bell is plugged in and the button generates electricity by itself Ring tones: 58 songs and dazzling music Power supply voltage: AC110 220 (V) Power consumption: 10mW; 0.5W (W) Scope of application: 180 meters Scope of application: residential, commercial and office buildings Material: Native ABS environmental protection material, safe and non-toxic Specification: One Drag One

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