3 function buttons.Volume control,backward button and forward button.
The Plug-in Chime provides a choice of 52 different melodies.
When the chime unit is plugged in,press backward button or forward button to control the door chime unit to play next music until you hear the chime you like.
Then long press the volume control button for 4 seconds until the LED indicator lights up,Meanwhile press the push button.
Sound Volume Selection
Press the volume control repeatedly until the desired volume is achieved-4 levels are available as a circle.
"What's Included in Your Kit
1x Plug-in Chime 1x Push Button
2x Mounting Screws 2x Screw Pegs
1x Double-sided Adhesive Tape
1x Instruction Manual
EASY TO SET UP: The wireless doorbell transmitter can be simply installed by just fixing on the wall without any wiring and also simply put the Receiver on the socket with No batteries required ,so it can work.
Satisfactory Performance Range: up to 1000-feet performance range in open air,ensures you to hear the bell and answer the door in time.
Power-saving&Works with Flashing Light Hint: The door chime receiver will flash blue light to give you a friendly hint,low power consumption.
Multiple ringtone&volume options:52 selectable chimes,4 level adjustable volume from 10db to 110db
Fashion Safety Design: Classic white surface,Lead-free, non-toxic,Waterproof.