Wireless Doorbell — Plug-in Chimes and Melodies for Home, Classroom and Business — Expandable, Waterproof, and Battery-Operated Chime Kits

Easy to install and use: Comprising a push-button transmitter and one or two plug-in receivers, this wireless doorbell is ideal for small two-story houses, large apartments, or classrooms. No more complicated pairing or synchronization procedures; the receivers require no batteries, so simply plug them into an electrical outlet, set the ringer tone and volume, and the system is ready to use. The push button easily attaches to your front door with the included double-sided adhesive tape. Expandable and modular: You can customize your setup to suit your needs by adding more wireless receivers and transmitters. Plug in the first receiver, press and hold the volume button, then press the first transmitter until you hear a beep; then press the second transmitter until you hear another beep, and release the volume button. Repeat this process for the second, third, fourth receiver, and so on: pairing is complete. Extended range up to 260 meters: The wireless signals travel up to 260 meters in open field, a sufficient distance to place the doorbell receiver wherever you like. The system does not generate any interference with your other household appliances or those of your neighbors; whether you are in the garden or in the kitchen, you will always be immediately notified when a visitor arrives at your door. This kit is made of non-toxic and harmless ABS material. Free of electromagnetic radiation, it is perfectly safe, including for pregnant women and children. 58 melodies and 5 volume levels: This wireless doorbell kit offers a wide selection of 58 melodies, including classic ringtones (like the traditional "ding-dong"), party tunes, birthday melodies, and many other pleasant tunes. The 5 volume levels range from 0 dB to 100 dB. A silent mode is available if you don't want to be disturbed by visitors. You can adjust the volume to suit your needs. Both the transmitter and receivers emit a light signal (flash) when the button is pressed, providing a valuable visual alert for the hearing impaired.