MQ-137 Ammonia Gas Sensor Module
Rs 10,500.00Rs 12,000.00 (-13%)
Quick Info:
- Detection Gas : Ammonia (NH₃)
- Detection Range : 5 – 500 ppm
- Operating Voltage : 5V DC
- Output Type : Digital & Analog
- Interface : 4-pin (VCC, GND, DO, AO)
- Compatible With : Arduino, ESP32, Raspberry Pi
The MQ-137 Ammonia Gas Sensor Module is a high-sensitivity detection module designed to identify and measure ammonia (NH₃) concentrations in the surrounding environment. Built around the MQ-137 semiconductor gas sensor, this module is ideal for hobbyists, students, and electronics enthusiasts working on air quality monitoring systems, industrial safety projects, smart ventilation controllers, or agricultural applications where ammonia levels must be tracked.
The module features a built-in comparator circuit that delivers both a clean digital output for threshold-based detection and an analog output for precise concentration readings, making it compatible with Arduino, Raspberry Pi, ESP32, and most microcontroller platforms. A sensitivity-adjustable potentiometer and onboard power and detection indicator LEDs make calibration and testing straightforward right out of the box.
Specification:
- Detection Gas : Ammonia (NH₃)
- Detection Range : 5 – 500 ppm
- Operating Voltage : 5V DC
- Output Type : Digital (DO) & Analog (AO)
- Heater Voltage : 5V ± 0.1V
- Preheat Time : ≥ 24 hours (initial use)
- Operating Temperature : -10°C to 50°C
- Operating Humidity : ≤ 95% RH (non-condensing)
- PCB Interface : 4-pin (VCC, GND, DO, AO)
