The MQ-137 Ammonia (NH3) Gas Sensor Module is a sensing component used to detect the presence and relative concentration of ammonia gas in the surrounding air. It is a popular choice for hobbyists, makers, students and engineers building air-quality monitors, leak-detection alarms and environmental sensing projects. The module is easy to wire into common microcontroller setups, making it suitable for both learning projects and practical builds around the home, workshop or farm.
Key features
- Designed to detect ammonia (NH3) gas in the air.
- Based on the well-known MQ-137 sensor element.
- Module format with easy connection pins for quick prototyping.
- Compatible with common microcontroller boards and DIY electronics setups.
- Compact size that fits neatly into project enclosures and breadboards.
Typical uses
- Air-quality and gas-monitoring projects.
- Ammonia leak-detection alarms in storage or utility areas.
- Environmental sensing for greenhouses, sheds and animal housing.
- Student, robotics and electronics learning projects.
How to choose / tips
- Confirm the operating connections match your microcontroller board before wiring.
- Allow the sensor a warm-up period for more stable readings.
- Mount it in open airflow, away from dust and direct moisture.
- Pair it with a display or buzzer if you want visible or audible alerts.
Why tna W rna
At tna W rna we focus on dependable components and reliable sourcing, so your project gets a part that works as expected. Enjoy fast delivery across Egypt and the convenience of cash on delivery, with friendly support if you have questions before you buy.
