The presence of dangerous LPG gas leaks with ideal properties in homes, workplaces, or gas containers is used. For this reason, an alarm unit is used to vibrate the alarm, which is a buzzer. The buzzer sounds the presence of the LPG volume. Sensors are commonly used to detect the essence of propane, isobutane, LPG and even smoke. Sensors have the advantage of combining sensitivity response times. When the LPG sensor detects a gas leak at work or at home, the sensor output goes into the active low (logical 0) state. The project uses Arduino UNO. The Arduino misses the low signal and the Arduino notices a gas leak. Arduino UNO turns on the LCD and buzzer. It also turns on the GSM modem and then sends an SMS message to the mobile phone number specifically mentioned in the source code program to alert people about the danger.
