The socket can still be used despite the wireless gong. The transmitter is battery-operated and is e.g. mounted in a protected outdoor area. The release of the bell signal is wireless. The bell signal can either be alternatively supported with an LED signal. The receiver simply plugs into the socket.
Price: £36.99 from Conrad Electronic
Radio gong set with blue flashing light as a visual ring indicator and integrated automatic night light (light color white night light can be switched off manually). The transmitter is battery-operated (battery included), the receiver for mains operation...
Battery-operated radio gong-set with full optical ring display (continuous or flashing light in blue, red or green can be selected). The ring tone can be switched off (for example, sleep mode). The system is expandable to a maximum of 4 transmitter and...
This wireless motion sensor detects when visitors are in the entrance zone and sends a signal via a radio signal to any BELL door bell.