Best Wireless Doorbell, Plusinno Physen Series 500 Ft Range with Waterproof Doorbell Push Buttons, No Batteries Required for Receiver, 52 Melodies Chimes & Bells Pushbutton 2015 NEWEST DOORBELL, NO SELLER SELLS ON AMAZON. This is the 2015 newest design doorbell push buttons. High quality with very good customer service. No matter what problem you meet, please contact our customer service. Simple, fashion design make your door elegant, high end visual effects. ABS material attributes of high rigidity which is also anti-burn and impact resistance; WATERPROOF TOUCH BUTTON AND 500 FEET OPERATING RANGE. Waterproof function as picture shows which canbe installed in indoors and outdoors. Our product is not pushbutton, but touching button enhancing user experience and more convenient for handle. 500 feet operating rang and 1000 feet in open area. Wireless range depends on construction and materials. PLEASE do NOT mount the pushbutton on metal materials; 52 MELODIES AND 4 LEVELS ADJUSTABLE VOLUME. There are various melodies for you to choose from as well as set tune to a specific receiver chime. Please select the favorite music before pairing program. 4 levels volume adjustable (from 25db to 85db) for the wireless doorbell kit; NO BATTERY NEEDED AND INSTALL EASY. The doorbell chime plugin receiver no need battery and mounted very easy. Plug the reseiver into a standard plug socket, then it works. 1 YEAR WARRANTY from the date of purchase. WIRELESS INSTALL, CE, FCC, RoHS CERTIFIED AND BUY MORE, SAVE MORE. No wire needed when install and install detail canbe found in user manual. Our oorbell pushbuttons have CE, FCC, RoHS certified, so quality is guaranteed. We love our customers, so buy more, save more. Please kindly check Special Offers and Product Promotions which shows our promotions.