IP68 Waterproof sensor Large LCD display with data logging function HOLD Function Agriculture and Horticulture: Accurate PAR measurements allow farmers and to optimize light conditions, ensuring plants receive adequate light for photosynthesis, which is crucial for growth, flowering, and fruiting. Scientific Research: Accurate light measurement is essential in studying natural ecosystems,understanding how changes in light conditions affect plant communities, and monitoring the health of habitats. Aquariums: In aquariums, especially those with live plants or coral reefs, maintaining proper PAR levels is crucial for the health of photosynthetic organisms.Accurate PAR meters help aquarists provide the right lighting conditions to support aquatic plant growth and coral photosynthesis. Product name:Light meter Item number:PAR_414 Use:Environmental monitoring Waterproof class:IP68 Power Type:2 x AAA batteries (without batteries) This Full Spectrum Quantum meter device is equipped with a waterproof sensor.It is used to gauge the flux of Photo Synthetically Active Radiation (PAR) within the wavelength range of 400 to 700 nanometers (nm).PAR indicates the crucial spectrum of light essential for initiating photosynthesis in plants. Colour:As Shown Material:ABS+Metal Package Contents: 1 * host 1 * probe 1 * rod (3 sections) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.