Hayes Indonesia PT is a supplier of nurse calling device. This device is very helpful if nurses work .. Patients and nurses are really very assisted with this device. The advantage for patients is when the need for quick treatment from doctors and nurses just press the transmitter it will appear monitor which patients or which room to be handled immediately. So also for the nurse only stand by in the nurse’ room by looking at the monitor it will find out which pasient must be handled. This device consists of the part that is Button or transmitter and monitor.Transmitter can be set up from 1 to 999 numbers depending on the need.Easy for application.No cable and no internet working.