REQUEST HELP: Ideal as an alarm for those who quickly need help, such as the elderly, children, disabled, pregnant or sick. Just press the call button for quick and thoughtful care without having to shout. It can also be used as a doorbell. EMERGENCY ALARM: We can put it in our pocket or use the necklace (included) to hang it around our neck like a pendant. We can also attach it to the bed or toilet with double-sided tape so that our parents or children can send signals in time. WATERPROOF SOS TRANSMITTER: The call button is waterproof. Approved for solids in bed/toilet. Approved for food/soup spills. And have it installed in the toilet, suitable for the following places: home, nursing home, clinic, hospital, etc. LONG WIRELESS RANGE: The range is 150 meters in open area. The bell unit has 55 ringtones to choose from. 5 adjustable volume levels from 0db to 110db. EASY INSTALLATION: This caregiver alarm system supports pairing between multiple receivers and transmitters. We can adjust the kit according to our needs.