1639 221 30009 gold mining gas sensor

{"cid":"91211450","title":"YJJ HCN 2E 30F 1639-221-30009 Leak Detection Portable Gold Mining Gas Sensor 0-20ppm Range","imgUrl":"https:\/\/img.ismap.com\/nimg\/6e\/f0\/fdea4aad79500f02af1ce6d9617f-200x200-1.jpg","attrs":{"Brand Name":"CITY","Model Number":"HCN 2E 30F 1639-221-30009","Minimum Order Quantity":"1","Delivery Time":"3 days","Place of Origin":"Britain","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"2200","Packaging Details":"canning","Operating temperature":"-20~50\u2103","Service life":"2 years","Zero Current at 20\u00b0C":"< \u00b1 5 nA","Resolution at":"20\u00b0C < 0.2 ppm"}}