Specifications

Model: MQ-4
Sensor Type: Semiconductor Gas Sensor
Operating Voltage: 5V DC
Current Consumption: Approximately 150mA
Output Type: Analog (AO) and Digital (DO)
Digital Output: TTL Compatible
Analog Output: Variable Voltage
Comparator IC: LM393
Detection Range: Approximately 300–10,000 ppm
Detectable Gases: Methane (CH₄), Natural Gas (CNG), Biogas, and other combustible gases
Sensitivity: Adjustable via onboard potentiometer
Response Time: Fast response and recovery
Warm-up Time: 20–60 seconds (24-hour initial burn-in recommended for optimal accuracy)
Operating Temperature: -20°C to +50°C
Operating Humidity: 5%–95% RH
Module Dimensions: Approximately 32 × 22 × 27 mm
Weight: Approximately 8g
Mounting Type: PCB Module
Interface: 4-Pin (VCC, GND, AO, DO)

Package Contains

1Nos MQ-4 Methane  Sensor Module