Usage Tips:[Take care of your family] For the elderly, disabled, or sick, they can call their caregiver without shouting for help and with no monthly fee. Caregivers don't have to be with the patient all the time, leaving both parties free. [Waterproof andamp; 52 Melodies] The button is IP55 waterproof and can accept water/soup splashes, but it should be removed before bathing. The caregiver pager system offers 52 tunes to choose from. [5 Levels Volume andamp; LED Flash] 5-level of volume range from 0dB to 110dB, accommodate babies and light sleepers. Silent mode with just LED flash is available when you don't want to disturb others. [High-frequency Technology]: Using adaptive high-frequency technology and more anti-interference, over 500ft/150m in the open area, strong penetration and signal stability, can penetrate a few walls. [Call Button for Elderly at Home] The Caregiver pager is a simple and efficient assistive device designed for patient and elderly fall alarms, and is a powerful assistant for elderly monitoring. The receiver can be plugged in different positions, and the panic button can be placed in a pocket, attached to a wheelchair, bedside, washroom wall, or worn as a life alarm necklace. [Customizable andamp; Expandable] Expand your existing calling system with up to 16 transmitters and unlimited receivers, and each transmitter can be set to different or identical music. As a result, you can use them in multiple rooms in your home or as a medical alarm system.