Features: *High reliable electrochemistry technology. Intelligent microprocessor control. Auto detect sensor failure. *Porous, hidden, beautiful design. High bright LED digital display the concentration of Carbon Monoxide (PPM). *Gas well inflow detection. Compatible with GSM alarm host. Two levels alarm, light and sound. *Low power consumption design with unique power saving function.Easy to clean, and lower maintenance cost. *Alarm Concentration: When the gas concentration is over 100PPM, the device will alarm. Discounted at only: US$ 35.19 
