【Long-Range Wireless Communication】Enjoy an impressive 300-meter direct line-of-sight range, ensuring reliable connectivity throughout your home or care facility. 【Customizable Alert System】Choose from 60 different melodies and adjust the volume across 5 levels, including a silent mode with only light notifications. 【Easy Installation】Plug-and-play design requires no wiring, making it simple to set up and use immediately. 【Versatile Application】Ideal for elderly care, individuals with disabilities, or anyone needing quick assistance, allowing users to alert family members or caregivers with a single press. 【Wide Coverage】The powerful signal ensures alerts can be heard from various locations, including balconies, bathrooms, and bedrooms. Specifications: Material: ABS Melodies: 60 different tunes Volume Settings: 5 levels (adjustable to light-only notifications) Receiver Dimensions: 80 x 40 x 25mm Lanyard-style Button Size: 65 x 37 x 11mm Watch-style Button Size: 246 x 32mm Lanyard-style Button Battery: CR2032 Watch-style Button Battery: 12V 27A Receiver Power: AC 100-240V (plug-in) Wireless Range: Up to 300 meters in open areas