MQ-4 gas sensor has high sensitity to Methane, also to Propane and Butane. The sensor could be used to detect different combustible gas, especially Methane, it is with low cost and suitable for different application.
Model No.: MQ-4
Sensor Type: Semiconductor
Standard Encapsulation: Bakelite (Black Bakelite)
Detection Gas: Natural gas/ Methane
Concentration: 300-10000ppm(Natural gas / Methane)
Circuit Loop Voltage: Vc ≤24V DC
Heater Voltage: VH 5.0V±0.2V ACorDC
Load Resistance: RL Adjustable
Character Heater Resistance: RH 28.5Ω±3Ω(Room Tem. )
Heater consumption: PH ≤900mW
Sensing Resistance: Rs 2KΩ-20KΩ(in 5000ppm CH4 )
Sensitivity S: Rs(in air)/Rs(5000ppm CH4)≥5
Slope: α ≤0.6(R5000ppm/R3000ppm CH4)
Condition Tem.: 20℃±2℃, Humidity: 65%±5%RH
Standard test circuit: Vc: 5.0V±0.1V,
VH: 5.0V±0.1V
Preheat time: Over 48 hours

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