SEN0129

Gravity analogue CH4 gas sensor (MQ4) for Arduino uses MQ4 probe which is able to detect natural gas. It is less sensitivity in detecting alcohol, cooking fumes and cigarette smoke. The sensitivity can be adjusted by the potentiometer. The output is proportional to the density of gas. Users can use analogue reading to read the data from this sensor. To ease the difficulty of using this sensor, a gravity interface is adapted to allow plug&play. The Arduino IO expansion shield is the best match for this senor connecting to your Arduino microcontroller.

• Standard assembling structure (Times-of-5mm centre distance between two 3mm mounting holes)
• Easily recognitive interfaces of sensors ("A" for analogue and "D" for digital)
• Icons to simply illustrate sensor function
• High quality connector
• Immersion gold surface
• 5V power supply, analogue interface type
• High sensitivity to CH4, natural gas
• Small sensitivity to alcohol, smoke
• Fast response, stable and long life, simple drive circuit
• Size is 40mm x 20mm(1.57"x0.79")