Hit Low, Hit Hard and Hit Far with the Mercury™ Quick LE Portable Monitor. The Mercury Quick Attack LE sets a new standard in the market and is the only portable monitor that meets NFPA 1964. It is compact and lightweight at 15 pounds and flows 500 GPM. Now even better, it can hit low at 10° and far up to 250 feet at 100 psi. Easy and quick to deploy, friction loss is minimal.