Features / Specs
- Sensor Manufacturer: Shenzhen Bofengsheng Electronics
- Sensor Part No: MQ-3
- Target Gas: Alcohol Vapor
- Detection Range: 25 ~ 500ppm (Alcohol)
- Operating Voltage: 5.0VDC ±0.1V
- Heating Element Resistance: 29Ω ±3Ω (Room Temperature)
- Heating Element Power Consumption: ≤ 900mW
- Output Voltage Range: 2.5V ~ 4.0VDC (125ppm Alcohol)
- Concentration Slope: ≤ 0.6 (R300ppm / R50ppm Alcohol)
- 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 16.2mm)
- Mounting Hole Diameter: ~2.9mm
- Spacing Between Mounting Holes (Center to Center): ~(27.2mm x 15.2mm)