Voice Alert Notifier Monitor up to six patients from one central location. The receiver stays at the nurse s station, when a patient tries to get out of a bed or chair, a message is sent to the receiver from the transmitter connected to the patient s sensor pad. The pre-recorded message can be specified to help speed up response to the patient. Perfect for non-hardwired facilities. Sensor pad sold separately. System includes Transmitter and Receiver. Order additional transmitters to monitor up to six patients.