Long Range Distance: Wireless caregiver pager has ultra long distance transmission and 330m/1082.7ft open space reception. High Sensitivity: Press the button to get the alarm button, and the penetration effect is excellent. There are alarms on floors 1‑3 when the wall is 50m/164.0ft long. Plug and Plug: Caregiver pager is plug and play, easy to use. Just plug the receiver into the power outlet, which is very convenient to use. Wide Application: Caregiver pager can be used in situations such as pagers for the elderly, wireless doorbells, greeters, and calls for hospital patients. 38 Music Songs, 4 Volume: Caregiver pager has 38 music songs to choose from, 4 levels of volume adjustment, and transmitter and receiver can be paired at will.