Newyond Wireless Doorbell Chime with 36 Chimes & Adjustable Volume ( White-Blue 1) Doorbell kit of 1 push button (transmitter) and 1 door chime (receiver) supports a wireless range of up to 500 ft in the open area Offers a total of 36 chime tones, from the traditional Ding Dong to various well-known melodies, and 5 levels of adjustable sound volume from 0db to 85db, meet the needs of different environment Easy Installation: Push button can be fixed to the door frame with the screws provided, or attached to the wall using double-sided adhesive tapes outlet in your home; ACplug-in) door chime can be plugged into an electrical outlet in your home or office IP44 weatherproof remote transmitter button is acceptable for outdoor use. Includes 1 x chime unit, 1 x remote transmitter button, double sided sticker, anchors, screws, Also Comes With Our 100% Customer Warantee