|
Parameter |
Value |
|
Product Model |
MQ-137 |
|
Gas Detected |
Ammonia (NH₃) |
|
Detection Range |
~5 – 500 ppm |
|
Sensor Type |
Semiconductor (SnO₂) |
|
Output Signal |
Analog / Digital (module) |
|
Operating Voltage |
5V |
|
Preheat Time |
≥ 24 hours (recommended) |
|
Response Time |
≤ 30 seconds |
|
Operating Temperature |
-10°C to +50°C |
|
Humidity Range |
15% to 90% RH |
|
Lifespan |
Long |
Gas Sensors, NH3 Ammonia
MQ137 Ammonia Gas Sensor | NH3 Gas Sensor Module for Arduino & IoT
₹2,360.00 Price With Tax
Buy MQ137 Ammonia Gas Sensor for detecting NH₃ gas. Ideal for Arduino, IoT, air quality monitoring, and industrial gas detection applications.
Available to Order lead time minimum 5-7 Weeks , Minimum quantity to order 5 pcs.
15 Days Warranty
This product comes with a 15-day warranty starting from the date of delivery. The warranty covers manufacturing defects only. If a defect is confirmed, the item will be replaced.
Warranty will not apply if:
- The product has been misused, dropped, or damaged.
- It has been exposed to water, fire, chemicals, or static discharge.
- It has been tampered with, soldered, or altered in any way.
The MQ-137 Ammonia Gas Sensor is a widely used semiconductor gas sensor designed for detecting ammonia (NH₃) gas concentrations in air. It is based on tin dioxide (SnO₂) sensing material, which provides high sensitivity to ammonia and other alkaline gases.
This sensor is popular in Arduino, Raspberry Pi, and IoT projects due to its low cost, easy interfacing, and reliable detection capabilities.
Key Features
- Detects Ammonia (NH₃) gas
- Wide detection range: ~5 to 500 ppm
- High sensitivity to NH₃ and alkaline gases
- Analog and digital output (module version)
- Adjustable sensitivity via onboard potentiometer
- Fast response and recovery time
- Long lifespan and stable performance
- Cost-effective solution for gas detection
Applications
- Ammonia leak detection systems
- Air quality monitoring
- Industrial gas detection
- Smart home safety systems
- IoT and embedded systems projects
- Agricultural and livestock monitoring
Benefits
- Affordable solution for ammonia gas detection
- Easy integration with Arduino, ESP32, Raspberry Pi
- Adjustable sensitivity for different applications
- Suitable for DIY and industrial projects
- Widely available and well-documented
Why Choose MQ-137 Sensor?
The MQ-137 is an excellent choice for cost-sensitive applications where moderate accuracy and wide detection range are sufficient. It is especially useful for educational, prototyping, and IoT-based gas detection systems.
Installation & Usage
- Power with 5V supply
- Allow proper preheat time (24 hours recommended)
- Read analog output via ADC or digital output pin
- Adjust sensitivity using onboard potentiometer
- Calibrate based on application requirements
Safety Information
MQ sensors are not highly selective. Use proper calibration and validation for critical safety applications.
Packaging Includes
- 1 × MQ-137 Ammonia Gas Sensor (module or raw sensor as per variant)
| Weight | 0.100 kg |
|---|---|
| Dimensions | 12 × 6 × 6 cm |
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