MQ-4 Methane Sensor Board

Features / Specs

• Sensor Manufacturer: Shenzhen Bofengsheng Electronics
• Sensor Part No: MQ-4
• Target Gas: Methane
• Detection Range: 300 ~ 10,000ppm (Methane)
• Operating Voltage: 5.0VDC ±0.1V
• Heating Element Resistance: 26Ω ±3Ω (Room Temperature)
• Heating Element Power Consumption: ≤ 950mW
• Output Voltage Range: 2.5V ~ 4.0VDC (5000ppm CH₄)
• Concentration Slope: ≤ 0.6 (R_5000ppm / R_1000ppm CH₄)
• Header Pin Pitch: 2.54mm
• Pinout: VCC = Supply Voltage (+) / GND = Supply Ground (-) / DO = Digital Output Signal / A0 – Analog Output Signal
• Sensor Dimensions: ~(32.5mm x 20.4mm x 22mm)
• Mounting Hole Diameter: ~2.9mm
• Spacing Between Mounting Holes (Center to Center): ~(27.2mm x 15.2mm)

Resources

• Shenzhen Bafosheng Electronics MQ-4 Datasheet – Original
• Shenzhen Bafosheng Electronics MQ-4 Datasheet – Translated