Charged with 5 lb. of Halotron, HG500R provides high performance "clean agent" fire protection. Combining the clean properties of HalGuard and a classic fire-engine red finish, make it ideal choice for RV's, garages, trailers, or the pit lane. No thermal shock to electronics No mess or damage to vehicle or surfaces Liquefied gas extinguishes hard-to-reach fires Does not impair operator's vision EPA approved Listed and rated 5B C by Underwriters Laboratories Rechargeable Made in U.S.A.