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The project deals with the development of an automatic anesthesia/fluid injector using embedded system technology. By passing an instruction using mobile/computer device the nodeMCU receives the signal and it processes those signals and activates the motor driver to drive the linear actuator accurately, the pressure of linear actuator is controlled by the micro controller unit. The injector consists of temperature sensor for measuring the temperature variation in the body, Respiration Sensor to measure respiration, Heartbeat Sensor for measuring heartbeat, the linear actuator is used to control the pressure of syringe and is performed under the supervision ofmicrocontroller. This project can be used in surgeries which last for longer hours. During such surgeries complete dose of anesthesia cannot be monitored in a single dose.Sothe anesthesia can be administered to the patient in few ml by the machine, and also to inject any kind of medicines to patients.