Bell4U Wireless doorbell - batteries are not required - 2 receivers and 2 push buttons - black

(This text is machine translated) This completely wireless doorbell set is very easy to install in a few minutes. You save costs and the environment, because the kinetic bell set does not require batteries. The receivers light up when the doorbell rings. You can choose from no fewer than 51 melodies and 4 volume levels. The push buttons generate energy when pressed, batteries in the push button are not required. Plug both bell receivers into the socket. The set is very convenient to use if you have two entrances/doors. Whichever bell push is pressed, both bells can be heard at the same time. Choice of 52 melodies and 4 volumes. The doorbell set can bridge a distance of at least 50 meters. The bells (receivers) can normally be placed in the socket anywhere in the house. Very handy to hear the bell in no less than two places. The receiver also contains an LED, which lights up when someone has rung the doorbell. The push buttons are splash-proof and can be easily mounted. You plug the two bells into the socke...