Wireless Button Door Bell Patient Elderly Deaf Caller with 7 Kinds of Flash Lamp Color Tones Features: 200 m wireless remote control receiving distance. 32 pcs of music are optional, and 5 volume levels can be adjusted. Super strong signal and penetration, no interference. Three working modes are available: Music; Flash ;Music + Flash. Obvious effect of seven-color flashlight, and it is more suitable for deaf people. Buckled bracket is designed to stand on the desktop or wear on the belt. Transmitter canopy design, meeting IP44 rainproof requirements. Contain 12V 23A battery and has a service life of more than one year. Specifications: Wireless Frequency: 433MHZ Wireless Distance: 200 meters (in the open space) Voltage: 4.5VVoltage: 4.5V Battery: 12V 23A (Included) Ring tones: 32 Power consumption: 0.5W Package Weight: 146g/5.1oz Package List: 1 x Wireless Button Door Bell 2 x Sticker 1 x Installation Kit 1 x User Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.