Smoke Gas LPG Butane Hydrogen Gas Sensor

Description

The MQ-2 Gas Sensor Module is a versatile metal-oxide semiconductor that detects combustible gases (like LPG, butane, propane, and hydrogen) and smoke. It works by changing its internal resistance when exposed to gas, providing both analog and digital outputs for easy integration into safety and alarm systems. [1, 2, 3, 4, 5]

Core Specifications

• Target Gases: LPG, Propane, Butane, Hydrogen, Methane, Smoke, and Alcohol
• Operating Voltage: 5V DC
• Detection Range: 200 to 10,000 ppm
• Outputs: Analog (voltage varies with concentration) and Digital (adjustable threshold via onboard potentiometer) [1, 2, 3, 4]

Key Features

• Dual Signal Output: Includes both analog and digital (TTL) outputs for direct connection to microcontrollers.
• Fast Response: Reacts quickly to combustible gas leaks and smoke.
• Adjustable Sensitivity: Built-in potentiometer allows you to set the exact gas concentration threshold.
• Built-in Protection: Features a stainless-steel anti-explosion mesh network to filter out dust and prevent the internal heater from causing ignition. [1, 2, 3, 4]