The Scent Projectors can be discreetly and strategically positioned just about anywhere. Scent Projectors are easy to control with build in duty cycle (on/off setting) and fan speed dial. Scent Projectors work as stand alone systems or can be integrated and controlled by the patent pending Live-FX multi media control system and/or home automation, show control systems, motion control or other trigger devices. One Scent Projector can scent areas up to 2,000 square feet. Scent Cartridges are sold seperately Specs: 4″h x 6 1/2 w x 10 d . Total package weight is 5 lbs.Additionsl models are available for HVAC, show control and custom configurations- please contact Scentevents for details on custom systems.