Wireless Self-Powered Doorbell Compatible with Homes

1 Self-generating power, no battery, environmental protection and save energy, press the transmitter to generate power. 2 Multiple ringtones are optional with round and melodious sound quality. 3 The ringtones volume is adjustable, there are 4 ringtones volume level for your selection. 4 Waterproof and moisture-proof design, effectively extending the service life of the outdoor unit. 5 Scope of application: family commercial residential areas, office buildings, hospitals, restaurants, factories, etc.

What's in the box
2 x Wireless Smart Doorbell