Great use on various occasions:\r\n Commercial/Residential/Assisted Living (It can be used as paging devices for elderly care and nursing residents.)\r\n\r\n\r\nHow to pair this doorbell:\r\n\r\n 1. Plug one receiver into the socket, seclect the sound you want by pressing \"music control button\" on receiver\r\n 2. Press and hold the volume button on this receiver for 5 seconds or so, then the receiver will blink with a \"ding\" sound. And then push the transmitter button at the same time (within 5seconds) to pair with the receiver. Finally, you will hear the music you set\r\n 3. The same way to pair other transmitter buttons with receivers\r\n\r\n\r\nFeature:\r\n\r\n 1. Design with fabric finish, that looks elegant and noble; the compact size of the plug-in receiver, it won\'t occupy other sockets\r\n 2. Each button (transmitter) can connect to both receivers with a different doorbell sound for front and back doors\r\n 3. Mute Mode: You can set the speakers to mute and only have indicator light when you need. That will not disturb your baby to sleep\r\n 4. Long Operating Distance: Up to 1000ft ultra long wireless range transmission, stable working signal\r\n 5. Memory Function: This doorbell has memory function, that can keep the setting when power is removed\r\n\r\n\r\nNote:\r\n\r\n 1. If you have installed the transmitter on door frame, you need to use small screwdriver to take it of and take it close to receiver and pair them.\r\n 2. Before use this product, please read the USER MANUAL carefully; and feel free to contact us by email if you have any questions.