Material ABS Brand Forrinx Model D Color Blue + white Quantity 1 Power Supply 220V Remote Controlled distance 280m Voice Decibels 50~50dB Battery Type 1 x 12V / 23A battery (included) Other Made of precise components combined w/ distance technology making wireless distance to 300m; Made of quality speaker quality music; 52 tones; Fashionable concise and elegant; With product appearance patent; 4-mode volume suitable for different environment and sound requirement; Digital dual-side board circuit stable and reliable; Performance is very well; With certification of CE FCC RoHS; Humanized design with installation accessories convenient to install; Button of remote control is long life can use for 25 years by pressing the button for 5 times a day Packing List 1 x Wireless doorbell 1 x Remote control 1 x Battery 2 x Screws 2 x Plugs 1 x Adhesive tape 1 x Chinese / English user manual