This module detects alcohol (ethanol). Detection range is 10 to 1000ppm.
Chip: LM393
Operating Voltage: 3V to 5V
Power consumption (current): 150mA
Analog
output voltage: 0.1-3 V
Digital output voltage: TTL digital 0 and 1 (0.1 and 5V)
Preheat duration: 20 seconds