alcohol detection in crowd area without stopping every individual , it is like cc camera it is fixed on wall if any one is detected by alcohol the device will detect and sends the person location and notification in the application . the alcohol level is

This channel collects real-time data from various sensors to monitor manhole conditions and provide timely alerts. The system uses an ultrasonic sensor to monitor water levels, a DHT11 sensor for temperature and humidity data, a gas sensor for detecting h