Ultra-Long Wireless Range】Boasts a remote connection of up to 1, 312 ft./400 m in open space and does not interfere with other equipment in your home 【Pleasant Chimes】The receiver bell features 52 tunes and 5 adjustable volume levels ranging from 0 to 115 dB; an LED indicator alerts those with impaired hearing or when the doorbell sound is (temporarily) unwanted 【Robust Push Button with Ultra-Long Battery Life】 IP55 waterproof rating to withstand the harshest weather; tested in temperatures of -4 °F to 140 °F; ultra-low power consumption and CR2032 lithium battery give a lifespan of up to 3 years; no need to worry about frequent battery replacement 【Easy to Set Up】Simply plug the receiver into a power outlet and attach the transmitter to the exterior wall with the provided screws or adhesive patch. This wireless doorbell set is by far the most convenient choice for your home and business 【Memory Function】The receiver bell remembers your set tune and volume level after a power outage, so there is no need to reset your previous settings every time (45)