PAR Sensor
Photosynthetically Active Radiation Sensor

Photosynthetically Active Radiation (PAR) Sensors are in situ optical devices used to study photosynthesis and plant physiology. They detect light between 400 and 700 nm and convert it into signals for PAR measurement. PAR sensors can be mounted on ground-based or water-based platforms or be portable and handheld. They are primarily used in agriculture, such as monitoring crop growth and analyzing light distribution in plant canopies, but they are also employed to study phytoplankton and aquatic productivity.