Wireless Volume Adjustable Door Bell - 48-Melody Choice (110~220V/US Plug)
Color: White - Material: ABS - Voltage: 110~220V (2-flat-pin plug) - Detection range: up to 200~260 meters - Built-in 48 melody chimes - 4 modes of the volume - The emitter was powered by 1 x 23A 12V battery (included)