- DIY Alcohol Tester Kit Components: This comprehensive kit includes all necessary components for building your own breathalyzer, including a 60 x 36 mm PCB and essential electronic parts. - Accurate Alcohol Detection: Equipped with an MQ-3 sensor that responds to alcohol vapor, providing reliable monitoring by activating alarms when unsafe values are detected. - Flexible Power Supply Options: Designed to work with a DC power supply between 5V and 5V, offering versatility for different setups and ease of use in different places. - Intelligent Automation Capability: Can control additional devices such as exhaust fans based on alcohol concentration measurements, promoting a safer environment at home or in industrial environments. - Use scenarios: Home workshop or garage monitoring to trigger alarms and ventilation when alcohol levels are unsafe; small industrial or office spaces where automated fan control helps maintain air quality based on sensor readings.