• Self-generating transmitter: No battery is needed. A finger press can trigger the generator to convert into electrical energy
• Not just a doorbell but also a pager: The elderly, children, and pregnant women have needs, just click to know, sleep at night with peace of mind 
• Easily deal with various places: In villas/apartments/office buildings/hotels/nursing homes and other places
• 5 levels of adjustable volume whatever you want: The doorbell has five levels of volume, which can be adjusted freely. (Volume can be adjusted, light reminder)
• Anti-interference, no crosstalk: Digital circuit design, multiple sets of use will not cause cross talk, effectively avoiding the troubles caused by mutual interference between neighbors

Specifications:

• Model: FA78
• Music: 60 music tracks
• Volume: 5 levels of volume (adjustable to flashing light only)
• Transmitter: No batteries required, press to generate power
• Receiver: Light only when the bell rings
• Transmitter size: 74 x 40 x 20.3mm
• Receiver voltage: plug-in power use (AC110V/220V)
• Receiver size: 84 x 52 x 29mm
• Remote control distance: 150M in a straight line on open ground