From flowchart a program start that sensor get touch or not? If Sensor has been exposed to the program will on and netduino will working that measuring temperature ,Show data temperature on mobile phone and keeping order and temperature in SD card if SD cars save receive data LED on board will turn on but if not save receive data LED on board will turn off. Next when program receive temperature the program will go to compare temperature if temperature more than 20 Celsius program will send status “Over temp” to mobile phone but if temperature less than 20 Celsius program will send status “Normal” to mobile phone. If sensor get touch or not and it will go to measure temperature again.