About the Product: [ Wireless Guard ] 2 Receiver 2 Call Button. Allow caregivers and residents to be free while ensuring that help is still available at the touch of a button, ideal for elderly, seniors, patients, disabled.[ 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. The call button can also be hung around the neck of the person with a neck strap who needs help like a pendant or secured with a bracket or double sticker.[ 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.[ High Quality ] Both call button and receiver are waterproof and dustproof. Whether you install it in the washroom or take it outside on a rainy day, you don’t have to worry about this caregiver pager getting wet.User Reminder This product has been programmed, tested, and inspected in the USA, therefore; no more programming and setup is needed. Just plug part A (chimes) into a power outlet and then press Part B (calling Button) when you need someone’s attention. Additionally, we are providing a Youtube link for you to see. https://www.youtube.com/watch?v=Rllc1k8LUq8 The videos will show you how easily the Nursing care calling bell works. We have tied the key strap for you, so you don’t even need to tie the key strap. If you still want to learn how to tie the key strap, please check the following Youtube link for reference. https://www.youtube.com/watch?v=xXsFEf4WTw0 The linked video will show you how to tie the key strap to the Calling Button (Part B).