Our project (Save Home) is a smart home system provides flame sensor ,gas 
sensor and temperature sensor DHT11 to measures temperature in order to 
control cooling and heating , we can determine the required temperature by a 
potentiometer .
And for security we have RFID to detect the correct card ,and a reed switch to 
detect if the door is open if it open while no correct card was entered an alarm 
will work , also we have movement sensor PIR, if any movement is detected 
without entering the correct card the alarm will work.
Also our project provides easy light controlling by mobile application ,and has LDR 
sensor when it gets dark a light will automatically turn on.
We have LCD to display some information .
We use Arduino mega and Arduino IDE for programming .