- 1, with the directions of the signal output.
- 2, two-way signal output (analog output, and TTL level output)
- 3, TTL output valid signal is low. (When low output signal light, and can be connected directly to the microcontroller)
- 4, 0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage.
- 5, having a high sensitivity and good selectivity to carbon monoxide.
- 6, has a long life and reliable stability