Magicfly Wireless Door Chime and Push Button, Ip44 Waterproof for the Push Button, White Over 50+ different ring tones. Four levels of adjustable volume from 25db to 110db; Operating range of over 500 feet. (1000 feet in open area). Remote transmitter button is rated IP44 weatherproof for the puch button and acceptable for outdoor use; Includes 1 plugin receiver unit and 1 remote transmitter button; Easy installation; convenient; double-side stickers;long lifetime; Certifications: All products passed CE, FCC, RoHS approval.