Item Type: Wireless Caregiver Pager Material: ABS Wireless Receiving Distance: Approx. 330m/1082.7ft (Open Area) Wireless Frequency: 433MHZ Mode: Two By One Built in Battery of Remote Control: 1x23A Alkaline Battery 60mAh Voltage: 100-240V138 Music Songs, 4 Level Volume: Caregiver pager has 38 music songs to choose from, 4 levels of volume adjustment, and transmitter and receiver can be paired at will. 2Wide Application: Caregiver pager can be used in situations such as pagers for the elderly, wireless doorbells, greeters, and one click calls for hospital patients. 3Long Range Distance: Wireless caregiver pager has ultra long distance transmission and 330m/1082.7ft open space reception. 4High 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. 5Plug 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. 2 x Host 1 x Remote Control 1 x Manual