SadoTech ST-FXR-BL Touch Activated Wireless Doorbell with 100-Percent Waterproof Button and 2 Plugin Receivers Operating at Over 500' Range with Over 50 Chimes AS SEEN ON BUSINESS INSIDER, FOX, ABC, NBC & CBS News - "It's built well, and it has a nice minimalist style" - Business Insider, 08/21/15. Our doorbells are great looking, loud, and reliable Unique Touch Activated Button Wireless Doorbell. Blue Led lights up when touching the TOUCH AREA of transmitter button. Button is 100% waterproof. Unique touch activated button wireless doorbell. Blue led lights up when touching the touch area of transmitter button. Button is 100% waterproof A perfect use case scenario for this product would be if you have a first floor and basement, garage, or second floor and you want both areas to ring from someone pressing a single transmitter button Over 50+ different ring tones. Operating range of over 500 feet (1000 feet in open area). four levels of adjustable volume from 25Db to 110Db Easily plug receiver into an electrical outlet (no batteries required for main receiver). ce, fcc, rohs certified Includes 2 chime units and 1 remote transmitter button, double sided sticker, anchors, screws, and battery for remote transmitter