[Long Range] Long operating range is up to 300 meters/1000 feet in the open area, stable and steady wireless signal ensures that you can hear the doorbell chime even you are a few rooms away or on another floor.. [60 Tunes] The plug-in doorbell receiver bell featured 60 Tunes and 5 adjustable volume levels ranging from 0 to 85 dB. It will remember your settings even if power outages.. [Waterproof Doorbell Button] The transmitter is waterproof for raindrops, which ensures perfect performance in the outdoor environment. The doorbell could work between -30°F and +65°F resistant to all weather conditions. [Unique Design] Compact and easy to use design, the plug receiver does not block other outlets. [Easy to Install and Set] Simply plug the receiver into a power outlet and attach the transmitter to the exterior wall with the screws or adhesive patch provided; there is no need to reset the melody and volume level after a power outage. Note: The data are all measured manually, please allow