BO YING Wireless Doorbell, Waterproof Door Bell with 38 Melodies and Led Flash,1000-Foot Range, 4 Level Volume, 2 Remote Buttons & 1 Receiver, Black

With 2 buttons & 1 loud chime, our wireless doorbell ensures no matter the visitors in the front door or back door, you will not miss anyone.You can distinguish front and back doors in different tunes by these steps:①Plug in a chime and press the chime tune button (the upper one) of the chime to select a tune that you like.②Then press the volume button (the lower one) of the chime for 3 seconds and hold it, it enters the pairing mode.③At this point, press 2 push buttons that need to be matched in turn(If you want to choose a different tune, you need to go back to the first step to select the tune.) Press them until they ring the selected tune,release the volume button after the pairing is completed.PLEASE NOTE: Do not unplug the receiver during pairing two transmitters.Compact and Stylish DesignThe modern,sleek wireless doorbell kit will fit seamlessly into your space.Add an elegant look to your house,office,dorm and so on.Blue LED Flashing Alert The receiver will ring and flash blue light when receiving signal.Easy InstallationNo wiring required. Simply plug the receiver into an electrical outlet and install the push button with included double-sided tape and screws.SpecificationsReceiver Power: AC 110-240V 50/60HzPush Button Battery: 23A 12V (included)Volume: 4 level adjustable levels(25-85dB)Transmission Range: 1000ft/280 m(open area)Number of Melodies:38Operating Temperature:-22°F to 158°FDigital Code Type: Auto-learningWaterproof(Transmitter):IP44Working Frequency: 433.92MHZ±75KHZCertifications:FCC,CE and RoHS compliant