[Easy to Install] Modern design, simple to operate. Installation is very simple, just plug the mini receiver into the socket and fix the transmitter on the wall with the provided accessories. It will not interfere with other devices in your home or nearby, ensuring that you will not miss any visitors. This wireless doorbell kit is the most convenient choice for your home and business. [1300ft Long Range] This high-frequency electronic technology wireless remote control doorbell adopts a wireless signal solution with strong anti-interference ability. In an open environment, the sensing distance can reach up to 1300 feet. Widely used in homes, apartments, schools, villas, offices, warehouses, hotels, factories, hospitals, etc. [55 Smart Ringtones] The perfect wireless doorbell kit with 55 different ringtones and 5 levels of adjustable volume from 0db to 110db. Easily select and set your favorite tones; the flashing indicator light can easily attract attention, including the hearing-impaired. Retain the memory of the last set melody and volume after power failure; no need to reset to the previous settings; the convenient and easy-to-use design brings you a better use experience. [IP55] Stylish and modern design in classic white, IP55 dust and waterproof; Battery life: 3 years. Operating temperature range is -22°F to 158°F; withstands all kinds of harsh weather conditions, suitable for indoor and outdoor use. [Expandable Doorbell System] If you want to expand the doorbell system to your home, you can add branded receivers and transmitters of the same model.