Plastic Shell: The outer layer of this piezoelectric igniter is made of plastic, providing effective insulation for safe operation. Main Function: This piezoelectric igniter is designed for igniting gas-powered appliances such as stoves, ovens, heaters, and fireplaces. It is also suitable for outdoor applications including barbecues and camping. 1 Out 2: The piezo igniter can be used as 1 out 1 or 1 out 2. Includes ignition needle and 1 meter wire. Ignition distance is 56mm. Mounting hole size is 18mm. Wide Compatibility: Compatible with propane and natural gas systems. Some modifications may be required during installation. May not fit all existing mounting configurations or cable lengths. Push Button Operation: No batteries required. Simply press the button to generate a spark. Ensure the notched wire is properly connected or touches the designated contact point.