The record for making the smallest smart gas monitoring system was set by Mihir Gupta (born on March 6, 2007) of Ludhiana, Punjab. He made a smart gas monitoring system (measuring 6 inches x 3 inches), comprising a sensor to detect gas, a buzzer for alerting high gas levels and an LCD showing the levels’ stability, using ESP microcontrollers, 2 LCDs, an MQ5 gas sensor, buzzer and 2 life power banks (power back up), at the age of 16 years, 11 months and 18 days.