MQ-4 Gas Sensor Module for Methane Gas

MQ-4 Gas Sensor Module detects the presence of methane (CNG) gas at concentrations from 300 ppm to 10,000 ppm, a range suitable for detecting gas leaks. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.

Specifications :

• Power requirements : VCC – 5V±0.1
• DO output : TTL digital 0 and 1 (0.1 and 5V)
• AO output : 0.1-0 .3 V (relative to pollution), the maximum concentration of a voltage of about 4V
• Detection Gas : Natural gas/Methane
• Detection Concentration : 200-10000ppm (Natural gas / Methane)
• Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
• Heater consumption: less than 750mw
• Operating temperature: 14 to 122 °F (-10 to 50°C)

Applications :

• Used in gas leakage detecting equipment for homes and industry. They are suitable for detecting of CH₄ and CNG.
• Industrial Combustible gas detector
• Portable gas detectors