Features

• Good sensitivity to Combustible gas in wide range
• High sensitivity to CH₄, Natural gas.
• Small sensitivity to alcohol, smoke.
• Fast response Stable and long life
• Simple drive circuit

Specifications

• Sensor Type Semiconductor
• 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)
• RH Related humidity less than 95%Rh
• O2 Oxygen concentration is 21% (standard condition) – Oxygen concentration can affect sensitivity
• Load resistance: 20KΩ
• Sensing Resistance Rs: 10KΩ- 60KΩ (1000ppm CH₄)
• Preheat time:Over 24 hour
• Standard Encapsulation Bakelite, Metal cap

MQ-4 Sensor Module