School bell

Basic specifications: main components: wristwatch: touchscreen or simple buttons with control options. remote control: portable device with a prominent button (red) to request assistance. antenna: to improve signal reception over a larger range. uses: medical: to alert nurses or doctors when needed in hospitals or homes. school: to call children from schools by parents. communication range: the device usually operates with wireless technology based on radio frequency (RF) and reaches up to 300 meters. battery: the watch is equipped with a rechargeable battery and the remote has a replaceable battery. ease of use: simple interface allowing anyone to request help easily with the press of a button. additional functions: sound or vibration alerts. custom icons on the screen to show connection status. multiple options to customize alerts.