IP33 daily life waterproof Warm prompt: In order for the doorbell button to be used normally for a long time, please put it under the eaves Over 150m reception range Whether you're upstairs, in the yard, or by the back door, just place a receiver near you. The alarm tone will successfully attract your attention. LED indicator light, multiple ringtones and volume 32 different tones to choose from, adjustable in four LevelsNo Mute). Flashes the LED indicator when a visitor presses the button. How to teach the button to the doorbell receiver Press the "music" and "volume" buttons of the doorbell receiver together, then the LED will light up, and this time press our doorbell button, the LED will beep once, then press the "volume" button to stop learning. Our receiver can not only work with doorbell button, but also work with PIR motion detector and door sensor which have the same radio frequency (433MHz).