This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-5V ADC.
1: Main chip: LM393, MQ-3 Alcohol Sensor.
2: Operating voltage: DC 3-5V.
3: The effective signal of TTL output is low level . (when Output low level ,the signal light on.can directly connected to the MCU)
4:With the signal output indication.
5: Dual signal output (analog output, and TTL level output).
TTL output valid signal is low level, can connected to microcontroller directly.
0 ~ 5V analog output voltage, the higher concentration the higher voltage.
6: With high sensitivity and good selectivity for ethanol vapor.
7: With a long service life and reliable stability.
8: Rapid response and recovery characteristics.
Size: 32mm*22mm*22mm(L * W * H)
For the household or environment detection s SnO2 detection devices. fit for the detection of Alcohol ethanol and Breath gas