Long-distance and strong signal: sufficient radio range, up to 300m range in open terrain. The signal can penetrate obstacles well. Whether you are cooking in the kitchen or pulling weeds in the garden, this radio bell will notify you in good time. Different ring tones and volume: The ringtone and volume can be freely selected and ensure a rich and clear sound. You can choose your favorite sound from 60 different beautiful melodies. In addition, the wireless doorbell has 4 adjustable volume levels to meet your different needs.Waterproof and dustproof: The wireless doorbell uses waterproof and dustproof IP44 technology and the working temperature is between -30C and 70C, suitable for outdoor use. It can work perfectly in rain, snow or sub-zero temperatures.Flashing signal: In addition to the ringtone, there is also an optical signal. When you press the bell, the blue LED circle flashes. This allows you to receive visual notifications, which is a great feature for the hearing impaired.