KERUI M518 self-generation doorbell wireless home smart electronic remote control long-distance no battery cordless doorbell Self-power generation wireless doorbell, integration with 52 songs, adopts advanced wireless transceiver technology and high-quality voice processing technology. The wireless doorbell can be applied to an apartment, villa, shop, hotel, home, office building, meeting room...
KERUI 57 Chime Wireless Doorbell Waterproof Wireless Door Alarm Contact Sensor Doorbell 57 different ring tones 4 levels of adjustable volume from 25db to 85db, Memory function for sound and chime selection Keep your children safe Alert when your little one open the window or the door 24/7 Lifeguard for...
