Luminance Meter Trivia: A light meter is an instrument that measures light intensity, also known as a flux meter or photometer. Illuminance is a physical quantity that describes the total amount of light emitted from a light source. Illuminance meters determine the flux of a light source by measuring the total amount of light passing through a given . Provided with 2 high quality RJ11 ethernet cable: 12 ft straight cable for extended stick and 4.9 ft coil cable for handheld. Stable measurement of photosynthetically active radiation (PAR, PPFD Photosynthetic Photon Flux Density). High accuracy PAR measurement for 400 to 700nm under all light sources, including LEDs. Detachable full-spectrum illuminance meter, portable and compact design, does not occupy space, a hand can grasp. Accessories with extension rods are not limited by of measurement. Suitable for a variety of applications that need to measure light intensity, especially for greenhouse planting and cultivation. Illuminance meters can be used to measure the flux of a variety of light sources, including incandescent, fluorescent, and LED lights. They are commonly used in areas such as lighting design, architectural lighting, stage lighting, and laboratory research. However, the 8583AZ Detachable Full Spectrum Illuminance Meter is primarily designed for plant photosynthesis measurements and is not suitable for non-plant related measurements., Weight: 1.08798126297 pounds, Manufacturer: Wesafrae