The Apogee PU-200 package pairs an Apogee SU-200 UV-A sensor with the AT-100 microCache Bluetooth logger for standalone wireless monitoring with no separate datalogger. The sensor measures UV-A radiation, 300 to 400 nm.The microCache powers the sensor, stores up to 400,000 data points, and downloads to a smartphone via the free ApogeeConnect app, making it easy to deploy a logging station in minutes.Key Features Apogee SU-200 UV-A sensor plus AT-100 microCache Bluetooth logger Measures UV-A radiation, 300 to 400 nm Stores up to 400,000 data points; Bluetooth download via ApogeeConnect 30 cm sensor cable included Built and calibrated in Logan, Utah; NIST-traceable, made in the USA, and backed by an industry-leading 4-year warranty. Why Choose This ModelThis package is the fastest way to add continuous, wireless monitoring of a specialty parameter in one purchase.Ideal Applications Standalone wireless monitoring Greenhouse, grow-room, and chamber studies Spot audits and research