We have a gas detector right in front of the combi in our kitchen in our gas alarm tracking system. This gas detector is determined directly in our smart home. Air circulation of natural gas pipes reaching combi have been investigated precisely and directed to air current in line with gas detector. In this way possible gas leakage shall be perceived by our gas detector and system is informed directly about it. When system receives gas leakage signal, gas valve of floor shall be closed automatically. In such way possible gas poisoning will be prevented.