The socket-mounted wireless doorbell RCP24 serves for optical and acoustic signaling. When the signal from a learned Easywave transmitter is detected, the programmed ringtone is played twice. The length of the ringtone depends on the selected melody. Up to 32 transmitters can be learned, with each transmitter assigned one of 12 ringtones. The volume can be adjusted in three levels and applies to all learned transmitters. An LED flash light can be optionally activated. Additionally, under-voltage telegrams from compatible transmitters can be evaluated.