is methane gas lighter than air

{"cid":"91189666","title":"Portable CH4 Methane Combustible Gas Detector Data Storage Function 0 - 100% LEL","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ba\/67\/07db6fd505deaab42eb0a7ab9b25-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"YuanTe","Model Number":"SKY2000-CH4","Minimum Order Quantity":"1 piece","Delivery Time":"3-5 working days","Certification":"CNEX,ISO9001,CE","Place of Origin":"China","Payment Terms":"Western Union, T\/T","Supply Ability":"1000 pieces\/week","Packaging Details":"Aluminum Suitcase","Detected Gas":"CH4","Measure Range":"0-100%LEL","Sampling Method":"Pumping Suction","Alarm Type":"Sound, Light, Vibration","Size":"205*75*32mm","Weight":"300g","Charging Method":"Power Adapter, USB Cable","Packing":"Aluminum Suitcase"}}