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 the field of measurement. Suitable for a variety of applications that need to measure light intensity, especially for greenhouse planting and cultivation. 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. Provided with 2 high quality RJ11 ethernet cable: 12 ft straight cable for extended stick and 4.9 ft coil cable for handheld. Luminance Meter Trivia: A light meter is an instrument that measures light intensity, also known as a luminous 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 luminous flux of a light source by measuring the total amount of light passing through a given surface. Illuminance meters can be used to measure the luminous 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. Application: 1. Horticulture: The measurement of PAR flux density is crucial for optimizing plant growth in greenhouses and indoor farms, as it provides information on the amount of light energy available for photosynthesis. By monitoring the PAR levels, growers can adjust the lighting intensity, duration, and spectrum to achieve optimal plant growth and yield. 2. Plant Physiology: 8583 AZ Detachable F