System of mounted lights along a track, allowing flexibility in positioning and direction of the lights.

Mechanism that steps down voltage for low-voltage lamps (e.g., halogen or LED lighting).

Describes the uniformity of light levels across an area. May be expressed as a ratio of average to minimum or maximum to minimum level of illumination for a given area. Lowest level of illumination should be no less than 1/4 the maximum level of illumination (4:1)

The percentage of vacant or unleased space in a property, which affects its income potential.

Land without any structures or improvements, often valued based on potential future use.

Measure of brightness from a light source which is taken through a light meters sensor at a vertical position on a vertical surface

Electrical potential difference, electric pressure or electric tension per unit charge in a circuit or electric field. Measured in volts.