CallToU 1000FT Waterproof Hearing Impaired Door Bell Portable Battery-powered Vibrating Receiver with Flashing LED Color:2 Push Buttons+1 Portable Receivers The motion sensor detects movement

The motion sensor detects movement along the perimeter

Just need to plug in the receiver and stick the wireless call button to the house/hospital/clinic

Durable Gift for The Elderly Hard of Hearing

The call buttons have low battery remind

you can check the included user manual

CallToU 1000FT Waterproof Hearing Impaired Door Bell Portable Battery-powered Vibrating Receiver with Flashing LED Color:2 Push Buttons+1 Portable Receivers The motion sensor detects movement4 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,