MQ-137 Ammonia Gas Sensor Module NH3 Detection Sensor for Arduino, ESP32 & Raspberry Pi

MQ-137 Ammonia (NH3) Gas Sensor Module

The MQ-137 Gas Sensor Module is a highly sensitive ammonia (NH3) gas detection sensor designed for air quality monitoring, industrial safety systems, environmental monitoring, and gas leakage detection applications. It can detect varying concentrations of ammonia gas and provide both analog and digital output signals for easy integration with Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller platforms.

The sensor features fast response time, high sensitivity, and adjustable sensitivity through an onboard potentiometer, making it suitable for both educational and professional gas monitoring projects.

Features

• Detects Ammonia Gas (NH3)
• High Sensitivity and Accuracy
• Analog and Digital Output
• Adjustable Detection Threshold
• Fast Response and Recovery Time
• Compatible with Arduino and ESP32
• Onboard Signal Indicator LED
• Easy Interface for Microcontrollers
• Stable and Reliable Performance
• Compact Module Design

Specifications

• Sensor Type: MQ-137
• Detection Gas: Ammonia (NH3)
• Operating Voltage: 5V DC
• Output Type: Analog & Digital
• Adjustable Sensitivity: Yes
• Built-in Comparator Circuit

Applications

• Ammonia Gas Detection
• Air Quality Monitoring
• Industrial Safety Systems
• Gas Leakage Alarm Systems
• Smart Agriculture Projects
• Environmental Monitoring
• Laboratory Experiments
• IoT Monitoring Systems
• Arduino and ESP32 Projects
• DIY Electronics Projects

Package Includes

• 1 × MQ-137 Ammonia Gas Sensor Module