CallToU Wireless Caregiver Pager Calling System Door Chime Entrance Alert for Home Retail Store Business Plugin Receiver (Need to Be Paired with Transmitter Then The Unit can Work)

[ Need Buttons ] This receiver need to be paired with the CallToU transmitter then the unit can work
[ Easy to Carry ] The receiver can be moved with the caregiver and the open area working range is 500+ ft, you can take it to the bedroom, kitchen or yard
[ Smart Ringtones ] The receiver of caregiver pager has 55 ringing tones to choose from and 5 level adjustable volume from 0db to 110db. Easy use by plug the receiver into an electrical outlet