This project is to build a water level automatic alarm via sending short messages to reduce the workload on patient care and nurse. In particular, check the IVs for patients. Thus concepts to facilitate and enhance the modernization of patient care. To have time to do any more with the load cells, sensors and photoelectric sensors, infrared sensors measure the weight of the water inside the bottle, representing the percentage format and count the drops of water, then bring it. processed by a microcontroller and an alert when there are irregularities in the count drops, saline, or salt water off. Does not flow under given conditions and water is running low, an alert at 50% and 10% of tests warning saline level automatically via short messaging 3 that by testing the rate drops. Salt water after tests showed that the maximum error is 28 drops / minute or error values at 6.67%, which remained acceptable percentage of the second test. Especially in the 150 ml with the error will be at 8%, and 100 ml with the crash reached 12.80%, which is a mistake to be born in the end, and test the third is the comparison rate drops. Weight ratio Counting rate drops There are also the less error is 5%, but a substantial proportion is as high as 99.44% margin of error, which is not accurate. Therefore concluded Test series since the saline drip rate at an average of 29.3 drops per minute and the average error is 2.33%, so at first, it is precisely the very end.