Features: 1.Multipurpose: Wireless pager call button is widely used on doorbells, old man callers, panic buttons and other scenes. 2.Prevent loss: Wireless pager call button is equipped with lanyard, can be used as the elderly caller, not easy to lose. 3.Long Operating Range: Wireless call button is received at 330m/1082.7ft in the open field, and rings at 50m/164.0ft through the wall on the 1st and 3rd floor. 4.Waterproof Design: Wireless call button built in large silicone pad, after a lot of body waterproof test, waterproof effect is excellent 5.Wide Application: Wireless pager call button is suitable for home, clinic, hospital, cafe, restaurant service, etc. specification:Item Type: Wireless Caregiver Call Button Material: ABS Wireless Reception Distance: Approx. 330m/1082.7ft (Open Area) Wireless Frequency: 433MHZ Built in Battery : 60mAh 23A Battery x 5 PackageList:5 xWirelessCaregiverCallButton