The microcontroller based system for wireless heartbeat, pulse and temperature monitoring system can be developed by using IOT. It can easily provide real time information available for many users and can send them alert in critical conditions over IOT. In India many patients are dying because of heart attacks and reason behind this factor is that they are not getting proper help during the period. To give them proper initial medical care and continuous monitoring of patient is required. The fixed monitoring system can be used only when the patient is lying on bed and these systems are huge and only available in the hospitals in ICU. This system of body sensor networks (BSN) is developed for home use by patients that are not in a critical condition but need to be timely monitored by doctor or family. In any critical condition the SMS is send to the doctor or any other family members which ensure security for the patient. It helps to save many lives by providing them quick service.