Functions 1. Alert Nurse Station to call for help in emergency situations after pressing the button 2. As patrol record 3. Maintain alarm log and statistic record Features 1. A replacement of the traditional system without the need of cabling (functional with 5V electricity supply for each call bell) 2. Simple installation with a wireless device (just hang it on top of the bed) 3. Alert with both mobile App and audible bell in the Nurse station 4. Able to identify different elderly