Description With waterproof design, the transmitter of the kit allows to be installed outside and work in rainy, snowy and windy days. The control range reaches up to 1000 feet in open area, which is long enough to hear the doorbell ring around house, ensuring you will never miss a visitor, even if you are a few rooms away or on another floor. Feature - Color: Black.- Material: Plastic.- Size: 8.5x8.5x2.6cm- 300m/1000ft ultra long wireless range will not interfere with other equipment in your home or those of your neighbors.- Stereo speaker delivers rich and crisp sound.- 52 Chimes to choose, set your favorite chime and change the monotonous ring of "Ding Dong" to make your house alive.- Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Specification The receiver - Working voltage: 90-260v - Standby current: 10mA - Operating current: 60 ma - Working frequency: 433MHz - It has the function of a night light and lights up at night or in darkness