Description:
MQ-136-Hydrogen Sulfide Gas Sensor
The MQ136 Gas Sensor is designed to detect the concentration of Hydrogen Sulfide gas, offering both digital and analog output for easy integration with microcontrollers like Arduino and Raspberry Pi.
Utilizing SnO2 as its sensitive material, the MQ136 sensor exhibits lower conductivity in clean air. However, in the presence of Hydrogen Sulfide gas, its conductivity increases proportionally with the concentration of the gas. By employing a straightforward electric circuit, the sensor converts this change in conductivity into a corresponding output signal indicative of the gas concentration.
Featuring high sensitivity to Hydrogen Sulfide and low sensitivity to other combustible gases, the MQ136 sensor is cost-effective and versatile, making it suitable for various applications where Hydrogen Sulfide detection is essential.
Applications:
- Domestic Hydrogen sulfide detector
- Industrial Hydrogen sulfide detector
- Portable Hydrogen sulfide detector
Features:
- Dual signal output (analog output and TTL level output)
- The TTL output effective signal is low. (The signal light is on when the output is low and can be directly connected to the microcontroller)
- Analog output 0 ~ 5V voltage, the higher the concentration the higher the voltage.
- Good sensitivity to hydrogen sulfide, liquefied gas, natural gas, city gas, and smoke.
- with long service life and reliable stability
- fast response recovery characteristics
- Size: 32mm X22mm X27mm length X width X height
- The main chip: LM393, ZYMQ-136 gas sensors
- Good sensitivity to Hydrogen sulfide
- Long life and low cost
- Simple drive circuit
Specification:
| Parameter | Specification |
|---|---|
| Gas Detected | Hydrogen Sulfide (H2S) |
| Sensor Type | Semiconductor gas sensor |
| Sensitive Material | SnO2 |
| Detection Range | 1 to 500 ppm |
| Sensitivity | High sensitivity to H2S gas |
| Sensitivity Adjustment | Potentiometer |
| Operating Voltage | 5V DC |
| Analog Output Voltage (AO) | 0-5V |
| Digital Output | TTL compatible digital output |
| Warm-up Time | Less than 10 minutes |
| Response Time | Less than 10 seconds |
| Recovery Time | Less than 30 seconds |
| Working Temperature Range | -10°C to 50°C |
| Operating Humidity Range | 20% to 90% RH (non-condensing) |
| Dimensions | Standard MQ-136 sensor size |
| Mounting Holes | Standard mounting holes |
| Lifespan | >5 years in normal usage conditions |
| Applications | Gas leakage detection, industrial safety, environmental monitoring, etc. |
Package Includes:
- 1 x MQ-136 Hydrogen Sulfide Gas Sensor
Digital Potentiometer MCP4131: Software Controlled Resistance
What if you could change a resistor value in firmware without ever touching your soldering iron? The MCP4131...
Read More →
Turbidity Sensor: Water Clarity Measurement for IoT System
Water quality monitoring has become a critical part of modern agriculture, aquaculture, industrial processes, and smart city infrastructure....
Read More →
Encoder Module: Position and Speed Measurement with Arduino
A rotary encoder converts the angular position and rotation speed of a shaft into electrical signals that Arduino...
Read More →Technical Specifications
| Model | MQ-136- |
|---|---|
| SKU | AI2542 |
| Weight | 0.01 kg |
| Availability | In Stock |
Applications & Use Cases
The MQ-136-Hydrogen Sulfide Gas Sensor is a versatile gas and dust sensor used across a wide range of applications including air quality monitoring, gas leak detection, industrial safety, HVAC systems, and environmental monitoring.
Common use cases:
- Building a gas leak alarm for LPG/methane
- Monitoring indoor air quality (CO2, VOC)
- Dust monitoring in a workshop
This product is ideal for environmental engineers, safety professionals, and IoT developers.
Technical Tip: MQ-series sensors need a warm-up period (24-48 hours for first use). Calibrate in clean air for accurate readings.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
