The MQ-8 Gas Sensor Module is designed to detect hydrogen (H₂) gas in the surrounding environment. Hydrogen is widely used in industrial processes, laboratories, and fuel cell systems, making reliable detection important for safety and monitoring. This module provides analog and digital outputs, allowing easy interfacing with development boards such as Arduino, ESP8266, and ESP32. It includes an onboard comparator and adjustable potentiometer for setting the gas detection threshold. The MQ-8 sensor is commonly used in hydrogen leakage detection systems, industrial safety monitoring, and electronics learning projects. Key Features Detects hydrogen (H₂) gas Adjustable detection sensitivity Analog and digital output signals Onboard LED indicators Easy interface with microcontrollers Suitable for Arduino and IoT projects Technical Specifications Parameter Value Sensor Type MQ-8 Gas Sensor Operating Voltage 5V Detectable Gas Hydrogen (H₂) Output Type Analog and Digital Comparator LM393 Preheat Time ~20 seconds Interface Pins VCC, GND, DO, AO Pin Configuration Pin Description VCC Power Supply (5V) GND Ground DO Digital Output AO Analog Output What’s in the Box 1 × MQ-8 Gas Sensor Module Ideal For Hydrogen leakage detection Industrial gas monitoring Safety systems Arduino and IoT projects Educational electronics experiments
