Elderly life alert necklace for wireless emergency calling in patient care This convenient wireless call alert system is ideal for home caregivers, hospital aides, therapists, and others, allowing them to notify patients, the elderly, and others of their needs. Using radio frequency technology, it can transmit up to 400 meters in open space and up to 100 meters indoors, with high penetration and fast response time. Choose from up to 48 ringtones, with five adjustable volume levels, reaching a maximum of 85-97 dB. Each receiver can connect up to 32 remote controls, each with its own ringtone setting to distinguish between callers. Or it can be used with motion sensors, door magnetic sensors, etc. as a doorbell. <br />The remote control is equipped with a mounting base that can be installed in a fixed position; it also comes with a rope that can be hung on the patient, making it convenient to make calls at any time. </li> </ul> </div> </li> </ul> </div> </div>