The First Alert Rechargeable Recreation Fire Extinguisher is intended for recreational vehicle use. It's listed as a class 5-B:C rated fire extinguisher. This portable fire extinguisher is designed to fight flammable liquid and electrical fires. Equipped with a durable metal head designed to meet demanding needs. This unit can be recharged by a certified professional when discharged. Includes a mounting bracket to keep the device secure on the road. Meets UL standards. It also features a metal pull pin, with a safety seal, that deters accidental discharge and discourages tampering. The color coded gauge is easy-to-read, corrosion-resistant, and provides accurate measurement. Includes easy to follow, 4-step instructions right on extinguisher. The label is chemical resistant and water proof, so you do not have to worry about it deteriorating. Class B & C Fire Extinguishers are designed to put out fires caused by flammable liquids and combustible gas.