RISWOND Wireless Doorbell, IP55 Battery Operated Plug in Doorbell with 52 Chimes, Flash Lights, 5 Levels Volume Easy Install Modern Doorbells at 1000ft Coverage for Home School Office, Black

【Ultra-Long Distance Wireless Range】-This wireless door bells boasts a remote connection of up to 300 M/1000 feet and does not interfere with other equipment in your home.You will never miss a visitor even if you are a few rooms away or on another floor.
【52 Melodious Chimes & Dazzling LED】-Our cordless doorbells for home are designed with 52 chimes and 5 volume levels ranging from 0 to 110dB,loud doorbell with 7 Colorful LED flash light is easy for people including the hard of hearing impaired to notice.
【Waterproof & Durable Door Chimes】-Ultra-low power consumption and the CR2032 lithium battery gives a lifespan of up to 3 years; no need to worry about frequent battery replacement，IP55 waterproof rating of the push button ensures the perfect use in rainy days.
【Easy to Install and SET】-This electric wireless doorbell requires no additional wires or tools,no battery required,the receiver can be installed anywhere there is an outlet. The transmitter can be easily installed with the included double-sided tape or screws.Each transmitter can be paired with up to 20 doorbell receivers.
【User-Friendly & Multifunctional Design 】-The doorbell has a memory function that makes the portable wireless doorbell chime remember the last ringtone and volume, no need to reset even if after a power outage.This wireless door bell can be installed on the front door of your apartment, house, villa, flat, office or workshop to welcome your guest.