High sensitivity alcohol gas detector detects alcohol vapors with precise concentration readings to support enhanced safety measures. Analog output voltage provides accurate concentration values corresponding to voltage levels for straightforward interfacing with data acquisition or control systems. DO switching output enables easy integration with microcontroller units MCUs or relay modules for alarms, interlocks, or automated responses. Double-sided PCB design delivers reliable performance, with an onboard power indicator and a TTL signal output indicator for quick status checks. Use scenarios: - Industrial or laboratory environments where ethanol vapor monitoring triggers ventilation or shutdown when safe thresholds are exceeded. - Systems that use MCUs or relay modules to implement alarms, interlocks, or automated safety actions. - Continuous monitoring with data acquisition systems by reading the analog voltage to log concentration trends and maintain control.