PAGER HELP: Ideal as an alert for people who need quick help, such as the elderly, children, disabled people, pregnant women or the sick. Just press the call button and receive fast, attentive care without yelling. It can also be used as a doorbell Emergency alert: we can put it in our pocket or use the necklace (included) to hang it around our neck as a pendant. We can also stick it on the bed or toilet with double-sided tape, so that our parents or children can report in time. Waterproof SOS transmitter: The call button is waterproof. Can be used for bed/toilet solids and can be used for meal/soup splashes. And install it in the toilet, the service doorbells are suitable for the following places: homes, nursing homes, clinics, hospitals, etc. Long wireless range: 300 feet in open areas. 5 volume levels adjustable from 0db to 110db Simple setup: This paramedic paging system supports pairing between multiple receivers and transmitters.