Compressed air operated - Refillable 5 Gallon Pail - Discharges 12 ounces per minute of a dry ULV fog. Control with a simple ball valve in the airline or use a timer and a 24 volt solenoid valve. Nozzles swivel up, Down, & 360 degrees. Discharges fog at least 75 feet in each direction. Discharges fog at least 125 feet if all four nozzles are pointed in the same direction. No moving parts. Air and insecticides filters included. Mount on a hand truck and use a portable fogger, or hang from the ceiling or wall Stainless Steel Bracket.This Fogger discharges the same amount of a ULV Fog as a $7,000 Micro-Gen Fogger. However, the MR-4 Fogger will discharge the fog further than a Micro-Gen Fogger and has almost no maintenance.