1byone® radio Portable Door Chime Doorbell Kit, 1 doorbell transmitter 1 Battery Operated Door Chime Receiver & 1 plug-in door chime receiver
You searched view video at Amazon.com a simple wireless doorbell with a transmitter and receiver for an elderly lady. The attachment of the transmitter is done using the enclosed, tailor-made, double-sided adhesive pad, which is in the illustrated in