Classic Wireless Doorbell - Stylish modern design, simple and clever, elegant and unique. High-quality materials prevent it from heating up and being disturbed. Waterproof and dustproof, the remote transmitter button is IP44 weatherproof. Operating temperature between -4 F and 140 F; withstands all kinds of adverse weather conditions, suitable for outdoor use. Long operating range - The operating range in open areas can reach 1,000 feet/300 meters, ensuring that you can hear the ring and answer the door in time. Whether you live a few rooms away or on another floor, in the garden or in the kitchen, you can always easily receive notification when someone calls from outside, ensuring that you will not miss any visitors. 36 Melodies and Adjustable Volume - The wireless doorbell provides 36 ring tones for you to choose from. The 4-level volume range is from 25dB to 110dB, which can meet your needs in different occasions. The flashing light with audio alarm indicator can be easily noticed by people, including the hearing-impaired. Easy to Install and Use - Comes with screws and double-sided tape to easily attach to the door frame of the transmitter. Easily plug the receiver into an electrical outlet (no batteries required for the main receiver). To install, simply plug it in where you need to hear it and place the button where you want someone to press it. Remembers your last melody and volume after a power outage; no need to reset to previous settings