Physen H1 Waterproof Wireless Doorbell kit with 2 Push Buttons and 3 Plugin Receivers Operating at 1000-feet Range,4 Adjustable Volume Levels with 52 Chimes,No Batteries Required for Receiver,White

1.Specifications:Voltage of Plug-in Receiver: AC 110V(US)Sound Volume: 25-110dB, 4 levelsWireless distance:1000 feet in open airWorking temperature: -30?-70?2.Pairing Instruction:Our doorbell button and receiver can freely matched with each other.For Example:1 button can pair with 2 or more receivers, Or 2 or more buttons can paired with the same one receiver and can set the receiver for different ringtones.The below steps can help you make the transmitter pair with the receiver:1) Plug receiver into outlet and press Music Control Button to choose your favorite music.2) After choose the music,then long press Volume Control Button for about 5-7 seconds until you can hear receiver "ding" and blue led light will be flashed.3) When the blue led light flashed,you should immediately press the transmitter button to pair with the receiver and you can hear the tune you selected which mean your operation was successful.Notice:Receiver will automatically exit the pairing mode when it doesn't get signal from the transmitter in 5 seconds.4)Press transmitter button to check about the pairing work.Then on this receiver to follow the above steps to pair with another transmitter,if you want to set the receiver for different tones,just choose another music and do the above steps to make it paired with another transmitter.3.Product Include:2*transmitter3*receiver2*screws&Anchors1*screwdriver2*double-sided adhesive tape1*user manual2*12V alkaline battery4.Warranty Promise:This units sold with 30 days money back and 1 year warranty from the date of purchase.