uxcell Waterproof Wireless Doorbell Operating 900 feet Range with Over 36 Chimes, No Batteries Required for Receiver,1 Transmitter 1 Receiver,White SUPER FAR REMOTE RANGE: It can reach a distance of up to 280m/approx 1000ft when there are no obstruction. You can install the doorbell in kitchen, living-room, bedroom etc OUTDOOR IP44 WATERPROOF: With excellent waterproof performance, remote transmitter button is rated IP44 waterproof and acceptable for outdoor use LED FLASH ALERT: Designed an intelligent blue flash light at the receiver for the people who is hard-in-hearing could also inform the host of any information.Energy-saving design of environment protection,Easily plug receiver into an electrical outlet (no batteries required for main receiver). CE, FCC, RoHS certified 36 CHIMES AND 4 LEVELS VOLUME: The doorbell receiver features 36 chimes included for all people to choose and Four levels of adjustable volume to suit your needs FULL 12 MONTH WARRANTY: Every uxcell doorbell comes with an 12 month no question asked guarantee to ensure customer satisfaction, our top priority