An ECG detection system for ASD is a form of technological development in the world of health to help families/relatives know and monitor heart health early. This system uses a heart rate sensor with the help of only 3 electrodes and has been tested to produce a good ECG and is safer to use than existing tools. The benefits of this product can help experts in their fields who deal with ECG problems in ASD children so that the examination can be done independently. The advantages of the product to be developed are high accuracy results. Then, the information generated from the product can be provided to medical experts for follow-up action.