Motion sensor can be mounted to the wall/by doorways, when sensor field is crossed, It transmits the signal to caregiver pager within the 500ft. 4 Remind Mode Receiver is with 4 remind modes, includes 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.
