?Long Operating Range?This waterproof wireless doorbell doorbell operation up to 1000ft/300m in open area allows you to hear the ringtone and answer the door in time (receiver signal depends on environment). Whether you're busy a few rooms away or on another floor, or in the kitchen, you'll always be easily informed when someone calls from outside, ensuring you never miss a visitor ?58 Beautiful Melodies and Adjustable Volume?The wireless doorbell offers a wide choice of 58 chimes for your personal taste! 4 volume levels ranging from 20dB to 80dB to meet your needs for different occasions. Flashing with audio alert indicators, easy to notice by hearing impaired people ?Flashing LED Light? The wireless transmitter and receiver flash when the transmitter button is pressed. The blue light alerts you, even if you are wearing a headset or earplugs ?Long Life and Versatility?Our waterproof wireless chime has a power off function. memory for sustainable energy use. The doorbell material is