The Zipato Gas Sensor protects you against this by reliably warning of escaping combustible gas if a defined limit value is exceeded. With its alert (75 db of 1m distance) you get warned early to look up the gas leakage or to keep yourself and your lovedones safe. The reliable gas sensor detects all combustible kinds of gas and it is recommended for using in kitchens or in the heating cellar.
Don't worry about the distance to the Z-Wave gateway. The gas sensor repeats the range of your Z-Wave network.