The creation of Smart houses worldwide is a recent trend. Numerous individuals and businesses have begun automating regular tasks like turning on lights and fans and adjusting the thermostat. The main goal of the project is to construct a gas leakage detector using an LPG gas sensor. This device will continuously track the amount of LPG gas in the air and, for added safety and security, link to the Internet of Things using an ESP module. This device can be implemented in LPG gas storage spaces in hotels and residences. The primary controller is an Arduino. The projects end product is utilised to alert the user and identify gas leaks from cylinders. Accidental explosions can occur in the home frequently and may be brought on by gas leaks or the storage of explosives like propane. People have adapted to using the LPG (Liquid Petroleum Gas) delivery system for cooking in the modern world. Numerous events will occur nearby while the LPG system is in use that could result in human fatalities. Gas leakage hazards are hazardous and may become unmanageable if prompt action is not taken. This document provides the detection of LPG cylinder leaking in certain places, such as the kitchen, and alerts the user regarding leakage in an effort to stop this from happening, whether intentionally or accidentally.