Feature 1: 1 PUSH BUTTON AND 1/2 RECEIVER:Wireless doorbells push button with 1 receiver,this doorbell kit is the perfect choice for home with two floors or two rooms.Door bells fit for home,office,villas,apartment,hospital,hotel,business,factories LONG DISTANCE WIRELESS RANGE:The wireless signals up to 1000 feets in open space and doesn't interfere with other equipments in your home or those of your neighbors;ensure that you will never miss any visitors,even if you are several rooms away. PLEASANT CHIMES:The receivers offer 52 different tunes and 4 adjustable volume leves ranging from 0 to 110 dB;an LED indicator alrets those with impaired hearing or when doorbell sound is unwanted. WATERPROOF AND ENERGY SAVING TRANSMITTER:Ultra low power consumption with packaged 12V alkaline battery,IP44 waterproof remote control push button tested in temperatures of -4F to 140F;withstand the harshest weather. EASY INSTALLATION: Simply plug the receiver into a power outlet and attch the transmitter on the wall or door frame with adhesive patch or screws included.If you have any problem,please feel free to contact us anytime and we will promptly resolve any issues. Features 2: Modern and stylish exterior design, Satisfy all kinds of home furnishing, office buildings, hotels, hospital,factories etc. There are 45 different polyphony melodies to choose from the doorbells,so you can enjoy different chime every day! 4 Adjustable volume from 0 to 100dB,this option is great for nap time! LED Flash,When the button is pressed, the doorbell transmitter and receiver flash at the same time with obvious brightness