Reliable Monitoring SolutionElderly must-haves: wireless call system enables caregivers to respond promptly. Supports AB button function (assign unique 38 melodies to each transmitter), ideal for multi-room elderly/patient care. ^^ Long-Distance CoverageStable wireless wireless intercom-like transmission reaches 1000ft in open areas (165ft indoors), unaffected by standard walls. Receivers use 100V-240V 50/60Hz AC power (US plugs included); transmitters operate on long-life 23A 12V batteries with ultra-low 0.25W standby consumption for year-round reliability ^^ Customizable Audible Alerts38 selectable call bell melodies produce clear ringing of70dB (at a 1-meter distance), ensuring alerts are heard even in noisy environments. Simple plug-and-play setup easy to use ^^ Lightweight And PortableLightweight white units (transmitter: 98g) with battery-only operation allow transmitters to be mounted on walls, carried in pockets, or worn as neck pendants. Receivers fit standard outlets in bedrooms, living rooms, or hallways for whole-home coverage ^^ Efficient SolutionLife alert systems with no subscriptions or monthly fees a self-contained system for homes, care facilities, or recovery rooms. Provides instant SOS capability for elderly, disabled, or post-surgery patients without cellular networks or Wi-Fi dependency