Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All Quick View Add to Wishlist Add to Wishlist Sale! Quick View SensorsMQ-4 Methane Gas Sensor ₹280.00 ₹140.00 The gas sensing material used in the MQ-4 gas sensor is tin dioxide (SnO2) with low conductivity in clean air.Add to cart