Features:

• With a signal output instructions.
  
• Dual signal output (TTL level output and analog output)
  
• TTL output valid signal for low level. (when the low output electric signal lights at 4. ordinary times, can be directly pick up SCM)
  
• Analog 0 ~ 5 v voltage, the higher the concentration, the higher the voltage.
  
• High sensitivity to hydrogen
  
• Can be resistant to ethanol steam, LPG (petroleum), smoke interference
  
• Has a long service life and reliable stability
  
• Quick response recovery feature