Byron DBY-23452BS Wireless Doorbell Set - Kinetic Energy - Black

No batteries, no wires: This bell set consists of a button with kinetic energy (i.e. it generates its own energy when someone presses it) and a bell to plug in. Easy installation: Use the supplied double-sided adhesive tape to attach the bell button or screw it in place (tool not included). Then plug the bell into a socket of your choice. Range: The bell button and the doorbell communicate via 433 MHz radio frequencies, the range of which can be up to 100 m in the open field. Customisable: Choose from 16 melodies, adjust the volume in 4 levels (max. 85 dB) or select silent mode so that your baby is not woken up from its nap. The light ring on the bell signals a visit. Environmentally friendly: The housings of the button and the bell are made of recycled plastic. The packaging contains no plastic., Manufacturer: Byron