{"title":"Methane CNG Gas Sensor - MQ-4","handle":"methane-cng-gas-sensor-mq-4","url":"/products/methane-cng-gas-sensor-mq-4","description":"This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.   This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.   This sensor comes in a package similar to our MQ-3 alcohol sensor, and can be used with the breakout board below.  Documents:   Datasheet Wiring Example ","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":14242,"title":"Default Title","sku":"SF-SEN-09404","price":14.53,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":24,"option1":"Default Title"}]}