RuiLing Portable Wireless Doorbell Kit, 36 Chime Tones Operating at 1000ft/ 300m Range IP44 Waterproof 1 Push Button (Transmitter) with 2 Plug-In Door Chime (AC Receiver)- White Wireless bell home and different ring tones, over 36 (36 chord) elegant melodies; Volume: 4 levels Volume adjustable from 0db to 85db; Waterproof and Stable long Wireless Range: 200 meters (300 meters at open area); Excellent materials keeps itself from getting higher temperature & interference; Easy installation; convenient; double-side stickers;long lifetime; IP44 Waterproof; It is easy to DIY; A stylish modern design in classic White, Easy Anchor; Package Includes 2 plugin receiver unit and 1 remote transmitter button Certifications 2x anchors and screws, 1x screw tool, and 1x 12V 23A battery for remote transmitter.: All products passed CE, FCC, RoHS approval.