Leakage of gas is a major issue in the industrial sector, residential buildings, and gas-powered vehicles, one of the preventivemethods to stop accidents associated with gas leakage is to install gas leakage detection devices. The focus of this work is to propose adevice that can detect gas leakage and alert the owners to avert problems due to gas leakages. The system is based on a microcontrollerthat employs a gas sensor as well as a GSM module, an LCD display, and a buzzer. The system was designed for gas leakage monitoringand alerts with SMS via an Arduino microcontroller with a buzzer and an MQ2 gas sensor. The circuit contains a Microcontroller MQ2gas sensor , buzzer, LCD display, and GSM module, when the sensor detects gas leakage it transmit the information to the Microcontrollerwhile the microcontroller makes a decision and then forwarded a warning message to the user as SMS to a mobile phone for decision to betaken accordingly. The output of this research will be significant in averting problems associated with gas leakages now and in future.Keywords: Gas Leakages, GSM module, Gas Leakage Detector, Gas Sensor, GSM module.