【260m wireless range】Large operating range of up to 260m. The strong and stable wireless signal ensures that you hear the doorbell clearly without the doorbell disturbing other devices in your home or that of your neighbors. 【Waterproof and Dustproof】The transmitter is waterproof to raindrops, the waterproof and dustproof rating of IP44 ensures perfect performance outdoors.The doorbell works between -30 and +70°C, withstands harsh weather conditions. 【4 volume levels & 45 ringtones】The doorbell receiver has 4 adjustable volume levels with a maximum setting of 85 dB.With 45 ringtones, the melody options range from classic doorbells to rhythmic melodies to suit every taste. 【Easy to Install】Simply plug the receiver into a power outlet, mount the doorbell transmitter on the wall or anywhere with double-sided tape or screws. The wireless doorbell was paired before shipping.You can easily install them anywhere in the home, garden, office, hospital, classroom