UK Plug Waterproof Wireless Doorbell Smart Home Door Bell Mini Elderly Wireless Pager Door Bells With 52 Chimes 4 Level

Specification: Doorbell Receiver Size: Approx.10.3x6.2x3cm/ 4.06x2.44x1.18" Remote Control Size: Approx. 7.8x4.4x1.7cm/ 3.01x1.73x0.67" Doorbell Power Supply:Plug in socket Remote Control Power Supply: 1 x 12V/23A battery ( included) Working Frequency: 315MHZ/ 433MHZ Effective Distance: Approx. 15-20m/ 49.21-65.62ft (Home) Effective Distance: Approx. 20-30m/ 65.62-98.43ft (Open areas) Power consumption: 15W Voltage: 9V