Description
The MQ-136 is a low-cost gas sensor module designed to detect hydrogen sulfide (H₂S) concentrations in the air. With high sensitivity, dual analog and digital outputs, and compatibility with popular microcontrollers, it is ideal for both industrial and home safety monitoring applications.
Key Features
- High Sensitivity: Detects hydrogen sulfide (H₂S) effectively
- Dual Outputs: Supports both analog and digital signals
- Easy Integration: Works with Arduino, ESP32, Raspberry Pi
- Adjustable Threshold: Onboard potentiometer for digital trigger level
- Cost-Effective: Ideal for DIY or professional gas detection
- Long-Term Use: Durable with stable performance
Specification
- Model: MQ-136
- Target Gas: Hydrogen Sulfide (H₂S)
- Operating Voltage: 5V DC
- Output Modes: Analog (AO), Digital (DO)
- Detection Range: ~1 – 200 ppm (typical)
- Preheat Time: ≥ 20 seconds
- Sensor Type: SnO₂-based electrochemical
- Operating Temperature: -10°C to +50°C
- Module Size: ~32 mm × 20 mm
- Weight: ~5 g
Application
- Industrial and domestic H₂S detectors
- Gas leak alarm systems
- Smart air quality monitoring
- Portable gas detection devices
- Environmental sensing projects