1. Adopt high-quality double-panel design, with power supply 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. (Can be directly connected to the single chip or relay module)
4. The analog output voltage changes with the concentration.
5. There is a screw hole for easy positioning;
6. Long-term service life and reliable stability
7. Fast response recovery characteristics
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital quantity 0 and 1 (0.1 and 5V)
AO output: analog level signal
Special reminder: After the sensor is energized, it needs to be preheated for about 20S, and the measured data is stable. It is normal for the sensor to generate heat, because there is an electric heating wire inside, if the hand is hot, it will be abnormal.
Wiring:
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. With fixing bolt holes for easy installation