Comprehensive Breathalyser Kit This kit provides everything you need for DIY alcohol detection. The circuit board measures 60 x 36 mm and is designed for easy assembly and use. Real-time alcohol concentration monitoring The MQ-3 alcohol sensor accurately detects alcohol vapour and triggers an alarm when concentrations exceed safe limits, supporting safety across different environments. Efficient power supply options Works with a wide voltage range of 5 to 5V DC, enabling flexible powering from common power sources. Automatic control function Can be integrated with other electrical devices such as exhaust fans and automatically activates when alcohol content is detected, providing an additional safety measure in homes or workplaces. Use scenarios - Home kitchen, garage, or workshop: connects to ventilation or alarm systems to reduce alcohol vapour buildup. - Workplace or laboratory environment: links to ventilation or safety equipment to quickly respond to elevated alcohol levels. - Small offices or public spaces: helps manage air quality by triggering safety devices automatically when alcohol is detected.