CallToU 1000FT Waterproof Hearing Impaired Door Bell Portable Battery-powered Vibrating Receiver with Flashing LED Color:2 Push Buttons+1 Portable Receivers you can check the included

you can check the included user manual

Nice christmas gifts

The call buttons have low battery remind

With a remarkable 1000-feet range

CallToU 1000FT Waterproof Hearing Impaired Door Bell Portable Battery-powered Vibrating Receiver with Flashing LED Color:2 Push Buttons+1 Portable Receivers you can check the included4 Modes for You to Choose Deaf doorbell flashing light has: 1,ringing + vibration 2,ringing + flashing light 3,ringing + vibration + flashing light 4,flashing light four modes to choose, flashing light silent mode, do not worry about the ringing will disturb the sleeping baby. LED light flashing, ringing vibration, you will never miss any visitors, in different scenes can choose different modes Adjustable Doorbell Volume5 kinds of short ringtones,