Description
First, the size: 32mm X22mm X27mm
Second, the main chip: LM393, ZYMQ-136 gas sensor
Third, the working voltage: DC 5 volts
Fourth, the characteristics:
1. With a signal output indication.
2. Dual signal output (analog output and TTL level output)
3. The TTL output valid signal is low. (When the output is low, the signal light is on, it can be directly connected to the microcontroller)
4. Analog output 0 ~ 5V voltage, the higher the concentration, the higher the voltage.
5. It has good sensitivity to hydrogen sulfide, liquefied gas, natural gas, city gas and smoke.
6. Has a long service life and reliable stability
7. Fast response recovery characteristics.
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