Using this gas stove piezo igniter is easy. First, make sure your gas stove is turned off. Then, install the igniter in the mounting hole (which has a diameter of 18mm). Connect it according to the instructions of your stove model. When you're ready to use the stove, simply press the ignition button. For safety, always check the connections regularly. If you notice any issues like a weak spark or no ignition, stop using it immediately. To maintain it, keep it clean from dust and debris. You can use a soft brush to gently clean it. Remember, if you're not sure about anything, don't hesitate to ask for help.