Byron DBY-23415 Dual Receiver Wireless Doorbell Set - Push button with kinetic technology To this wireless doorbell, with a range of 100 m, no batteries are needed. The push button is powered by kinetic energy. Plug-in doorbell (receiver) plugged into any wall outlet and has 16 melodies.- Wireless range of up to 100 meters- Push button with kinetic energy (powered without battery)- Choose from 16 melodies and adjust the volume in 5 steps- The doorbell (receiver) is placed in any wall socket inside the house - IP44 rated doorbell button- Easy installation Do you always want to hear when someone is ringing the doorbell? With Byron DBY-23412, this is not a problem. With the stylish doorbell, you can be sure never to miss a visitor. The push button can easily be installed with double-sided tape. You also don't have to worry about replacing the batteries, as the push button works with kinetic energy. The plug-in doorbell can be placed in an electrical outlet, so that you can decide for yourself where the sound comes from. Wireless range up to 100 metersKity consists of a high-quality doorbell and a weatherproof push button. The push button is powered by kinetic energy, which means that it generates its own energy. In this way, no battery is needed. The push button can be installed at all doors/ports. The plug-in doorbell can be placed anywhere in the house. Thanks to the range of 100 meters, it can also be placed in the attic. This way you won't miss any visitors.16 melodies and 5 sound levels Select the desired melody from the 16 options via the push button and set the ring volume to 5 sound levels via a button on the doorbell. Easy installationUse the supplied double-sided tape to attach the water-resistant push button. The push button can also be screwed in (screws and plugs are not included). The plug-in doorbell can be placed anywhere in the house. In just a few seconds, you can quickly and easily install the push button and doorbells. Species: 16pcsStretch: 100m Volume control: Yes, 4 levelsDecibel: 80 dB Frequency: 433 MHz Power source doorbell (receiver): 230V (Euro)Power source push button: Kinetic energyMax number of receivers to a button: InfiniteMax number of push buttons to a receiver: 16pcs Content in packaging:1st Push button2pcs Doorbells (receiver)Double-sided TapeUsing instructions