MQ-9 gas sensor has high sensitity to Carbon Monoxide, Methane and LPG. The sensor could be used to detect different gases contains CO and combustible gases, it is with low cost and suitable for different application.
Sensor Type: Semiconductor
Standard Encapsulation: Bakelite
Detection Gas: CO and combustible gas
Concentration: 10-10000ppm CO
100-10000ppm combustible gas
Circuit Loop Voltage: Vc ≤10V DC
Heater Voltage VH: 5.0V±0.2V AcorDC(High)
1.5V±0.1V ACorDC(Low)
Heater Time TL: 60±1S(High)90±1S(Low)
Load Resistance RL: Adjustable
Character Heater Resistance RH: 31Ω±3Ω(Room Tem. )
Heater consumption PH: ≤350mW
Sensing Resistance Rs: 2KΩ-20KΩ(in 100ppm CO)
Sensitivity S: Rs(in air)/Rs(100ppm CO)≥5
Slope: α ≤0.6(R300ppm/R100ppm CO)
Condition: Tem. 20℃±2℃; Humidity: 65%±5%RH
Standard test circuit: Vc: 5.0V±0.1V;
VH(High): 5.0V±0.1V;
VH(Low): 1.5V±0.1V
Preheat time: Over 48 hours

Well and High Quality Control , 
Prompt Delivery , 
Competitive Prices , 
Small Order Acceptable