DIY LPG Gas Leak Detector: Protect Your Home with this Simple Circuit! A Liquid Petroleum Gas (LPG) gas detector circuit is a crucial component in ensuring safety in environments where LPG is used, such as homes, commercial kitchens, and industrial settings. This circuit is designed to detect the presence of LPG gas leaks in the surrounding atmosphere and trigger an alarm to alert occupants of potential danger. The LPG gas detector circuit typically consists of the following key components: 1. G