Features:

1. Adopt high-quality double panel design, with power indication and TTL signal output indication;
2. With DO switch signal (TTL) output and AO analog signal output;
3. TTL output high and low level. (It can be directly connected to the single-chip microcomputer or relay module)
4. The analog output voltage changes with the concentration.
5. It has better sensitivity.
6. There is a screw hole for easy positioning;
7. Long-term service life and reliable stability
8. Fast response and recovery characteristics

Electrical performance:

Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 And 1 (0.1 and 5V)
AO output: analog level signal.
Special reminder: After the sensor is powered on, it needs to be warmed up for about 20S, the measured data will be stable, and the sensor heating is normal, because there is a heating wire inside, if it is hot, it will not be normal NS.

Wiring mode:

1. VCC: connect to the positive pole of the power supply (5V)
2. GND: connect to the negative pole of the power supply
3. DO: TTL switch signal output
4. AO: analog signal output
5. Equipped with fixing bolt holes for easy installation