The Apogee Instruments AM-330 Underwater Sensor Wand is a telescopic wand designed to make PAR measurements easier in hard-to-reach areas such as plant canopies, growth chambers, greenhouses, and aquariums. Built with a durable segmented fiberglass wand and a versatile mounting platform, the AM-330 accommodates both narrow and wide Apogee sensor heads. The wand collapses to 11.25 inches and extends to 36.25 inches, allowing users to easily position sensors exactly where measurements are needed. Unlike standard sensor wands, the AM-330 is suitable for use in both freshwater and saltwater environments. Measuring Photosynthetically Active Radiation (PAR) is critical for precision growing. Understanding how much usable light plants receive helps guide decisions regarding irrigation, temperature, nutrient management, CO2 supplementation, and overall crop performance. The AM-330 simplifies the process of collecting accurate PAR measurements in challenging locations. Key Features: Telescopic Design: Extends from 11.25 to 36.25 inches (28.5 to 92 cm) for easy access to difficult measurement locations Underwater Capable: Suitable for use in freshwater and saltwater environments, making it ideal for aquariums and aquatic applications Segmented Fiberglass Construction: Durable and corrosion-resistant for long-term use Versatile Mounting Platform: Includes mounting holes compatible with both narrow and wide Apogee sensor heads Broad Compatibility: Works with Apogee quantum sensors, DLI meters, and pyranometers Accurate PAR Measurement: Easily measure light levels over plant canopies, in growth chambers, or underwater Applications: The AM-330 Underwater Sensor Wand is ideal for greenhouses, indoor grow rooms, farms, gardens, and aquariums. Use it to position sensors above dense canopies, in difficult corners, or underwater where direct access is limited. Compatible with Apogee quantum sensors, DLI meters, and pyranometers, the AM-330 provides a simple and reliable way to collect accurate light measurements for research and cultivation.